Time is something everyone experiences, but describing how quickly it passes can sometimes create grammar confusion. Many learners wonder whether they should say “time has flown by.” Although both phrases sound similar, only one follows standard English grammar rules. This comparison explains their meanings, correct usage, common mistakes, and how to choose the right expression confidently.
Time Has Flown By: Comparison Overview
The phrase “time has flown by” is commonly confused because they describe the same idea: the feeling that time has passed very quickly. The difference between them is not in meaning but in grammatical correctness.
The phrase is the correct expression used in standard English. It uses the past participle form of the verb fly, which is required after has in the present perfect tense.
On the other hand, it is considered incorrect because flew is the simple past form of fly, not the past participle form. After helping verbs such as has, have, or had, English requires the past participle form.
Understanding this difference helps writers and speakers communicate more accurately, especially in formal writing, professional communication, and academic contexts.
Definition of “Time Has Flew By”
It is an incorrect grammatical expression in standard English. People often use it because they know that flew is related to the verb fly, and they try to place it after has.
The verb fly has three main forms:
| Verb Form | Example |
| Base form | fly |
| Simple past | flew |
| Past participle | flown |
The word flew is used when talking about a completed action in the past without a helping verb.
For example:
- The bird flew across the sky.
- She flew to another country last year.
However, when using has, the correct form is flown, not flew.
Incorrect:
- The phrase by so quickly.
Correct:
- The phrase by so quickly.
Although native speakers may understand the meaning, it does not follow standard English grammar.
Time Has Flown By: Definition of “Time Has Flown By”
It is the correct and natural expression used to describe how quickly time seems to pass.
The phrase uses the present perfect tense:
Subject + has/have + past participle + by
In this expression:
- Time = subject
- has = helping verb
- flown = past participle of fly
- by = indicates movement or passing
The phrase does not mean that time literally flies like a bird. Instead, it is an idiomatic expression meaning that time has passed very quickly.
Examples:
- It has been since we started this project.
- I cannot believe how fast the year has flown by.
- It during my college years.
This expression is commonly used in conversations, writing, speeches, and emotional reflections when someone wants to express surprise about how quickly time passes.
Main Differences Between “Time Has Flew By” and “Time Has Flown By”
The main difference between these two phrases is grammatical accuracy. Both expressions attempt to describe the same feeling, but only one is correct in standard English.
| Feature | Time Has Flew By | Time Has Flown By |
| Correctness | Incorrect | Correct |
| Verb form used | Flew (simple past) | Flown (past participle) |
| Grammar structure | Incorrect after “has” | Correct present perfect tense |
| Meaning | Intended to mean time passed quickly | Time passed quickly |
| Usage | Avoid in formal and informal English | Widely accepted and natural |
| Example | Time has flown by this year. ❌ | Time has flown by this year. ✅ |
Why Is It Correct?
The verb fly is an irregular verb, meaning it does not form its past tense by simply adding -ed.
Its forms are:
- Fly → present form
- Flew → past form
- Flown → past participle form
When we use has, we need the third form of the verb:
✅ Has flown
❌ Has flew
Examples:
- The plane flew over the city yesterday.
- The plane has flown over the city many times.
The same rule applies to the expression about time:
- Time flew by during my vacation. ✅
- It during my vacation. ✅
- Time has flew by during my vacation. ❌
Comparison Table: Time Has Flew By vs Time Has Flown By
| Category | Time Has Flew By | Time Has Flown By |
| Grammar type | Incorrect phrase | Correct phrase |
| Verb tense issue | Uses simple past incorrectly | Uses present perfect correctly |
| Verb form | Flew | Flown |
| Used after “has” | No | Yes |
| Suitable for writing | No | Yes |
| Suitable for conversation | No (although understandable) | Yes |
| Meaning | Intended meaning: time passed quickly | Time passed quickly |
Key takeaway:
Whenever you use has, have, or had with the verb fly, remember to use flown, not flew.
Time Has Flown By: Grammar Guide
Understanding the grammar behind it becomes easier when you understand the verb forms of fly and how the present perfect tense works.
The verb fly is an irregular verb, which means its forms change instead of following the usual -ed pattern.
| Verb Form | Word | Example |
| Base form | Fly | Birds fly in the sky. |
| Simple past | Flew | The bird flew away. |
| Past participle | Flown | The bird has flown away. |
The phrase “time has flown by” follows the correct grammatical structure:
Subject + has + past participle + by
Example:
- Time + has + flown + by.
- Time has flown by.
Here, has shows that the action started in the past and continues to have an effect on the present. The phrase expresses the feeling that a period of time passed faster than expected.
Time Has Flown By: How Each Term Is Used in Sentences
Using it in Sentences
The phrase is used when someone wants to express that time passed very quickly. It is often used when talking about memorable experiences, important events, or periods of change.
Sentence pattern:
Subject + has + past participle + by + time period/context
Examples:
- It has been since I joined this company.
- It during my university years.
- It feels like it since we first met.
- It, and the project is already finished.
- I cannot believe how quickly it.
The phrase is commonly used in emotional or reflective situations because it expresses surprise about the speed of time.
Using “Time Has Flew By”
The phrase “time has flew by” should not be used in standard English because flew cannot follow has.
Incorrect structure:
Subject + has + simple past form
❌ Time has flew by.
Correct structure:
Subject + has + past participle form
✅ Time has flown by.
However, flew by can be used without has when describing a completed event in the past.
Examples:
- The weekend flew by quickly.
- The vacation flew by before we knew it.
- The meeting flew by because it was interesting.
In these examples, flew is correct because there is no helping verb before it.
Time H as Flown By: Common Mistakes Learners Make
Many English learners confuse flew and flown because both words come from the same verb. The following mistakes are common:
1. Using “flew” after “has”
Incorrect:
- Time has flown by so quickly.
Correct:
- It has flown by so quickly.
Reason: After “has,” English requires the past participle form.
2. Confusing Simple Past and Present Perfect
Incorrect:
- It has flown by since January.
Correct:
- It has flown by since January.
Simple past:
- Time flew by during my vacation.
Present perfect:
- It has flown by since I started my job.
3. Thinking “flew” is the third form
Some learners remember:
Fly → Flew →?
They may incorrectly assume flew works after has. The correct forms are:
Fly → Flew → Flown
Example:
- I fly every day.
- I flew yesterday.
- I have flown many times.
4. Translating Directly From Another Language
In some languages, verb forms do not change in the same way as English. Learners may translate the idea directly and create phrases like “time has flew by.”
Learning verb patterns instead of translating word-for-word helps avoid this mistake.
Simple Rules to Remember
Here are some easy rules to remember the difference:
Rule 1: After “has,” “have,” or “had,” use “flown”
Examples:
✅ Time has flown by.
✅ The bird has flown away.
✅ They have flown to London.
Never:
❌ Time has flew by.
❌ The bird has flew away.
Rule 2: Use “flew” for completed past actions
Use flew when talking about something that happened at a specific time in the past.
Examples:
- She flew to Dubai last month.
- The plane flew over the mountains.
- The hours flew by during the concert.
Rule 3: Remember the three forms of “fly”
A simple memory trick:
Fly → Flew → Flown
Think:
- Today: I fly
- Yesterday: I flew
- Until now: I have flown
Rule 4: “Time has flown by” is an expression, not literal flying
The phrase does not mean time physically moves through the air. It means time feels like it passes very quickly.
Example:
- My childhood feels like it ended yesterday. Time has flown by.
Time Has Flown By: Quick Tips for Writing and Speaking
Using the correct phrase can make your English sound more natural and polished. Follow these tips:
Tip 1: Choose “has flown by” for formal writing
For essays, reports, emails, and professional writing:
✅It since the beginning of this project.
Avoid:
❌ It since the beginning of this project.
Tip 2: Use “flew by” when there is a finished past event
Examples:
- The summer flew by.
- The meeting flew by.
- The weekend flew by.
Tip 3: Listen for helping verbs
Whenever you see:
- has
- have
- had
check whether you need the third form of the verb.
Examples:
- has gone ✅
- has eaten ✅
- has written ✅
- has flown ✅
Not:
- has went ❌
- has ate ❌
- has wrote ❌
- has flew ❌
Tip 4: Use natural expressions
Native speakers commonly say:
- Time has flown by.
- Time flies when you are having fun.
- Where has the time gone?
- I cannot believe how quickly time passed.
These expressions sound natural in conversations and writing.
Time Has Flown By: When to Use Each One
When to Use “Time Has Flown By”
Use “time has flown by” when you want to describe that time has passed very quickly from the past until now.
Common situations include:
1. Talking About Life Experiences
Example:
- Time has flown by since my childhood days.
This shows that many years have passed quickly.
2. Discussing Education
Example:
- Time has flown by during my four years at university.
It expresses surprise that the study period ended quickly.
3. Talking About Work
Example:
- Time has flown by since I started my first job.
It shows that a long period feels short.
4. Remembering Special Moments
Example:
- Time has flown by since our wedding day.
It expresses emotional reflection.
5. Describing Projects or Events
Example:
- Time has flown by, and our project deadline is already here.
It shows that time passed faster than expected.
When NOT to Use Each One
Do Not Use “Time Has Flew By”
Avoid using “time has flew by” because it is grammatically incorrect.
Incorrect examples:
❌ Time has flew by this year.
❌ Time has flew by since we started school.
❌ Time has flew by so fast.
Correct versions:
✅ Time has flown by this year.
✅ Time has flown by since we started school.
✅ Time has flown by so fast.
Do Not Use “Time Has Flown By” for Specific Past Events Without “Has”
Although “time has flown by” is correct, it is not always the right structure.
Incorrect:
❌ Time has flown by yesterday.
Correct:
✅ Time flew by yesterday.
Reason:
“Yesterday” refers to a finished past time, so use simple past.
Time Has Flown By: Which One to Use (Decision Guide)
Choosing between “time has flew by” and “time has flown by” is simple once you understand the verb rules. The correct choice depends mainly on the verb form required after has.
Use this guide to make the right decision:
| Question | Correct Choice | Reason |
| Are you using “has” before the verb? | Time has flown by ✅ | “Has” requires the past participle form. |
| Are you talking about time passing quickly until now? | Time has flown by ✅ | It uses the present perfect tense. |
| Are you describing a finished past moment? | Time flew by ✅ | “Flew” is correct in the simple past tense. |
| Are you writing formally? | Time has flown by ✅ | It follows standard English grammar rules. |
| Are you unsure between “flew” and “flown”? | Choose “flown” after has/have/had ✅ | Remember: Fly → Flew → Flown. |
Time Has Flown By: Quick Decision Formula
Use “time has flown by” when:
- The sentence contains has/have/had.
- You are connecting the past with the present.
- You want to express that time passed quickly.
Example:
✅ Time has flown by since I started my career.
Use “time flew by” when:
- You are talking about a completed past event.
- There is no helping verb before “flew.”
Example:
✅ The vacation flew by so quickly.
Never use:
❌ Time has flew by.
The phrase sounds understandable, but it is grammatically incorrect.
Real-World Practical Examples
Understanding examples from different situations makes the difference between “time has flew by” and “time has flown by” easier to remember.
Examples
The phrase “time has flew by” is incorrect, so the examples below show incorrect usage and their corrected versions.
Example 1: Education Context
❌ Incorrect:
- Time has flown by during my college years.
✅ Correct:
- Time has flown by during my college years.
Explanation:
Because the sentence uses has, the past participle flown is required.
Example 2: Daily Life Context
❌ Incorrect:
- Time has flown by since we moved into this house.
✅ Correct:
- Time has flown by since we moved into this house.
Explanation:
The speaker is connecting a past event with the present, so the present perfect tense is needed.
Example 3: Business Context
❌ Incorrect:
- Time has flown by, and our company has already completed five years.
✅ Correct:
- Time has flown by, and our company has already completed five years.
Explanation:
The correct form makes the sentence professional and grammatically accurate.
Example 4: Writing Context
❌ Incorrect:
- As I look back, I realize time has flown by quickly.
✅ Correct:
- As I look back, I realize time has flown by quickly.
Explanation:
Formal writing requires the correct past participle form.
Example 5: Conversation Context
❌ Incorrect:
- I cannot believe time has flown by so fast.
✅ Correct:
- I cannot believe time has flown by so fast.
Explanation:
Although people may say the incorrect version casually, standard English uses “flown.”
“Time Has Flown By” Examples
The phrase “time has flown by” is correct and commonly used in many situations.
Example 1: Education Context
- Since I entered university.
- It feels like yesterday when I started my first semester.
Meaning:
The speaker feels that their years of education passed very quickly.
Example 2: Family and Personal Life Context
- My children have grown so quickly; time has flown by.
- It has been since our family moved to this city.
Meaning:
The speaker is reflecting on how quickly life changes.
Example 3: Business Context
- It has been since we launched our company.
- It is hard to believe that ten years have passed; time has flown by.
Meaning:
A business owner is expressing surprise about how quickly years have passed.
Example 4: Technology Context
- Technology has changed so much because time has flown by since the first smartphone was introduced.
- Time has flown by, and artificial intelligence has become part of everyday life.
Meaning:
The phrase highlights rapid changes over time.
Example 5: Professional Communication Context
- Looking back at this project, time has flown by, and we have achieved our goals.
- During this successful partnership.
Meaning:
The expression is used professionally to reflect on progress.
Example 6: Travel Context
- Our two-week vacation ended quickly because time has flown by.
- We visited so many places, and it flew by before we realized it.
Meaning:
The speaker feels the trip passed faster than expected.
Example 7: Social Conversation Context
- I cannot believe we graduated ten years ago. Time has flown by!
- We have been friends for so long; it
Meaning:
The phrase expresses surprise and nostalgia.
Self-Assessment (Fill in the Blanks)
Complete the sentences using the correct phrase or verb form.
- I cannot believe how quickly ______ since I started my new job.
- Time ______ during our summer vacation because we were having fun.
- It feels like yesterday, but time ______ since my childhood.
- The correct phrase is “Time has ______ by.”
- After the word “has,” we use ______, not “flew.”
- The movie was so interesting that the two hours ______ by quickly.
- My school years are over, and time has ______ by.
- She said that time ______ by when she was traveling.
- The sentence “Time has flew by” is incorrect because ______ is not the correct verb form.
- Fly → Flew → ______ is the correct verb pattern.
- The last five years have passed quickly; time has ______ by.
- Yesterday’s meeting ______ by because everyone was engaged.
- We use “flown” after helping verbs like ______, “have,” and “had.”
- Time has ______ by since we opened our business.
- The correct sentence is: “Time has ______ by so fast.”
- The weekend ______ by before we knew it.
- “Flew” is the ______ form of the verb fly.
- “Flown” is the ______ participle form of the verb fly.
- I cannot believe ten years have passed; time has ______ by.
- Choose the correct sentence:
A) Time has flew by.
B) Time has flown by.
The correct answer is ______ because it follows English grammar rules.
Answers
- Time has flown by
- Flew
- Has flown by
- Flown
- Flown
- Flew
- Flown
- Flew
- Flew
- Flown
- Flown
- Flew
- Has
- Flown
- Flown
- Flew
- Past
- Past
- Flown
- B) Time has flown by
Time Has Flown By: Final Verdict
When comparing “time has flew by” and “time has flown by,” the correct choice is clear: It is the grammatically correct expression. The confusion happens because flew and flown are both forms of the verb fly, but they are used in different situations.
Remember the simple rule: Fly → Flew → Flown. Use flew for simple past sentences, such as “The weekend flew by.” Use flown after helping verbs like has, have, and had, such as it.
Using the correct phrase will make your English sound more natural, accurate, and confident in conversations, academic writing, and professional communication. Whenever you want to describe how quickly time passes, choose it.
Time Has Flown By: Conclusion
Understanding the difference between “Time Has Flew By Or Time Has Flown By” helps English learners avoid a common grammar mistake and use the correct expression with confidence. While both phrases try to describe the feeling that time passes quickly, only one follows proper English grammar rules. The phrase uses the past participle “flown” after the helping verb “has,” making it the natural choice for conversations, writing, and professional communication
. Remembering the simple pattern fly, flew, flown makes this difference easier to understand. Whether you are talking about childhood memories, work experiences, education, or special moments, using it will make your English clearer, smoother, and more accurate.
FAQs
Is “Time Has Flew By” grammatically correct?
No, “Time Has Flew By” is not grammatically correct in standard English. The word “flew” is the simple past form of “fly,” and it cannot be used after “has.” The correct expression is “time has flown by” because “flown” is the past participle form required after helping verbs.
Why is it the correct phrase?
“Time Has Flown By” is correct because it follows the present perfect tense structure. The phrase uses “has” with the past participle “flown.” It describes how quickly time has passed from the past until now and is commonly used in everyday conversations and formal writing.
What is the difference between flew and flown?
“Flew” is the simple past form of the verb “fly,” while “flown” is the past participle form. For example, “The bird flew away” uses the simple past, while “The bird has flown away” uses the past participle with a helping verb.
Can I say “Time Flew By”?
Yes, “Time Flew By” is correct when talking about a completed past event. It uses the simple past tense. For example, you can say, “Time flew by during my vacation.” However, when using “has,” the correct form becomes “time has flown by.”
When should I use “Time Has Flown By”?
Use it when you want to express that time has passed very quickly and the experience connects the past with the present. It is often used when reflecting on life changes, memories, education, relationships, or important events.
Why do people confuse “flew” and “flown”?
People often confuse “flew” and “flown” because both words come from the same verb, “fly.” The difference depends on grammar structure. Many learners remember the words but forget that “has,” “have,” and “had” require the past participle form.
Is “Time Has Flown By” suitable for formal writing?
Yes, it is completely suitable for formal writing. It follows correct English grammar and can be used in essays, reports, professional messages, speeches, and personal reflections where you want to describe how quickly time has passed.
What is an easy way to remember the correct phrase?
A simple way to remember it is the verb pattern: fly, flew, flown. Use “flew” for past actions without helping verbs and use “flown” after has, have, or had. Therefore, the correct phrase is always I have flown.
Is “Time Has Flew By” understood by native speakers?
Yes, most native speakers will understand the meaning of “time has flew by,” but they will recognize it as a grammatical mistake. In standard English, the correct and natural expression is ” time has flown by.
What does it mean?
It means that time seems to have passed very quickly. It does not mean that time physically flies. Instead, it is an expression used to describe surprise or emotion about how quickly a period or experience has ended.
