The phrase Time Has Flew By or Time Has Flown By can be confusing, but the correct expression is time has flown by. The main difference comes from the verb forms of fly: flew is the simple past, while flown is the past participle. Since it must be followed by a past participle, time has flown by is grammatically correct. This common expression describes time passing quickly, such as when a week, month, year, or day seems to pass very fast. The phrase may sound right in spoken English, but time has flew by doesn’t follow standard English grammar.
The confusion usually happens because flew and flown are both forms of the same verb. You can use flew for a completed past event, such as “The day flew by,” but after has, you need flown. This rule is useful in different situations, especially when you want to write clearly and confidently in written English. In natural conversation, people may make this mistake because one form sounds right, but standard correct grammar rules still require the correct verb form. The words passed and quickly can also describe how time moves, although flown by gives the expression a more natural and lively meaning.
For writers who are unsure, the easiest way to remember the distinction is the pattern fly → flew → flown. Flew is used as the simple past, while flown is the past participle used after has and other helping verbs. These uses have different grammatical purposes, so choosing between them depends on the situation and the structure the sentence requires. When discussing time, time has flown by is the right choice, while time has flew by is incorrect. Understanding these phrases, words, and verb forms makes it easier to use this common expression naturally in both spoken English and written English..
Quick Answer: Time Has Flew By or Time Has Flown By?
“Time has flown by” is correct. “Time has flew by” is incorrect in standard English.
The reason comes down to the three main forms of the irregular verb fly:
- Fly — base form
- Flew — simple past
- Flown — past participle
When you use has, have, or had before fly, you need the past participle flown.
For example:
- Time has flown by. ✅
- Time flew by. ✅
- Time has flew by. ❌
- Time had flown by. ✅
- Time had flew by. ❌
So, if you want to say that time has passed surprisingly quickly, write “time has flown by.”
Comparison Overview
| Expression | Correct? | Verb Form | Grammar | Example |
| Time has flown by | ✅ | Past participle | Present perfect | Time has flown by this year. |
| Time flew by | ✅ | Simple past | Simple past | Time flew by during our vacation. |
| Time had flown by | ✅ | Past participle | Past perfect | By then, time had flown by. |
| Time has flew by | ❌ | Simple past | Incorrect | — |
| Time had flew by | ❌ | Simple past | Incorrect | — |
The key isn’t the phrase “time … by.” The important part is the verb form that follows the auxiliary verb.
Once you recognize that pattern, the choice becomes much easier.
Main Differences Between Time Has Flew By and Time Has Flown By
Time has flown by is grammatically correct, while time has flew by is incorrect because flown is the past participle needed after has.
“Time Has Flown By” Is Correct
The phrase “time has flown by” uses the present perfect tense.
Its structure is:
Subject + has + past participle + by
In this sentence:
- Time is the subject.
- Has is the auxiliary verb.
- Flown is the past participle of fly.
- By forms part of the expression describing the passing of time.
The phrase means that time has passed quickly, often faster than expected.
For example:
Time has flown by since the beginning of the year.
The speaker looks back at the period that has passed while still connecting that experience to the present.
You can use the expression with many periods of time:
- The week has flown by.
- The month has flown by.
- The summer has flown by.
- The year has flown by.
- The last few months have flown by.
The subject determines whether you use has or have. Singular subjects such as time and the year take has, while plural subjects such as the months take have.
“Time Has Flew By” Is Incorrect
“Time has flew by” doesn’t follow the normal structure of the present perfect tense.
The problem is flew.
Although flew is a past form of fly, it isn’t the past participle. You can’t normally place it after has in standard English.
Think about these familiar patterns:
- has gone, not has went
- has written, not has wrote
- has eaten, not has ate
- has seen, not has saw
- has flown, not has flew
This pattern explains the problem clearly. Has + past participle is the grammatical structure.
Therefore:
Time has flown by. ✅
Not:
Time has flew by. ❌
“Time Flew By” Is Also Correct
Here’s where things get interesting. Flew isn’t a wrong word. It becomes wrong only when you use it in the wrong grammatical structure.
You can correctly say:
Time flew by during our vacation.
There is no has before flew, so the simple past form works perfectly.
Compare these sentences:
Time flew by during our vacation.
Time has flown by since our vacation began.
Both sentences are correct. The difference comes from the tense.
The first sentence describes a completed past period. The second connects a past period to the present.
Fly, Flew, and Flown: Understanding the Three Verb Forms
The verb fly is irregular, which means it doesn’t form its past tense simply by adding -ed.
| Form | Verb | Example |
| Base form | fly | Birds fly south in winter. |
| Simple past | flew | The bird flew away. |
| Past participle | flown | The bird has flown away. |
This pattern appears in both literal and figurative uses.
For the literal meaning:
- Birds fly across the sky.
- The bird flew over the house.
- The bird has flown away.
For the figurative expression about time:
- Time flies when you’re having fun.
- Time flew by during the trip.
- Time has flown by this year.
Learning these three forms together makes the distinction much easier to remember.
Read Also:No Difference vs No Different: What’s the Difference and Which Is Correct?
Why “Has” Requires “Flown”
Has is a helping verb used to form the present perfect tense, so it must be followed by the past participle of the main verb. The past participle of fly is flown, making has flown the grammatically correct form.
Understanding the Present Perfect
The present perfect follows a basic pattern:
has/have + past participle
For example:
- She has gone home.
- They have finished the project.
- He has written three emails.
- The year has flown by.
The tense often describes something that happened in the past while maintaining a connection with the present.
That’s why “time has flown by” feels natural when you’re reflecting on a period that has recently passed or is still connected to your current situation.
For example:
It’s hard to believe how quickly this year has flown by.
The year isn’t necessarily finished. The speaker is commenting on how quickly the year has progressed so far.
Why “Has Flew” Breaks the Pattern
The mistake becomes obvious when you compare the forms directly.
Has + flown follows the present-perfect structure.
Has + flew doesn’t.
The same principle applies to many irregular verbs. English learners sometimes assume that because flew refers to the past, it should work after has. However, English doesn’t choose verb forms based simply on whether an event happened in the past.
The grammatical role matters.
Flew functions as the simple past.
Flown functions as the past participle.
That’s the crucial distinction.
What Does “Time Has Flown By” Mean?
The Literal Meaning of “Fly”
The verb fly traditionally describes movement through the air.
A bird flies. A plane flies. An insect flies.
However, English frequently uses movement through the air as a metaphor for speed. That’s where the expression about time comes from.
The Figurative Meaning of “Time Has Flown By”
When someone says “time has flown by,” they don’t mean that time literally has wings.
They mean that time seems to have passed extremely quickly.
Imagine spending an entire weekend with close friends. You talk, laugh, eat, watch movies, and suddenly it’s Sunday evening. You might say:
I can’t believe how quickly time has flown by.
The expression often carries an emotional tone. It can suggest happiness, surprise, nostalgia, or even sadness.
For example:
- Time has flown by since we met.
- The years have flown by since graduation.
- Our vacation has flown by.
- Time has flown by since the baby was born.
The phrase works especially well when someone feels that a period ended sooner than expected.
When to Use “Time Flew By”
Use “time flew by” when you’re talking about a completed period in the past.
For example:
Time flew by during our vacation.
The vacation has ended, and the speaker looks back on it.
Other examples include:
- Time flew by during the concert.
- The afternoon flew by while we talked.
- The weekend flew by.
- Time flew by when I was in college.
- The evening flew by at the party.
The simple past often works naturally with finished time expressions such as yesterday, last weekend, last summer, during the trip, or when I was younger.
When to Use “Time Has Flown By”
Use “time has flown by” when the period has a connection with the present.
For example:
Time has flown by this year.
Here, the year is still relevant to the speaker’s current situation.
Other examples include:
- Time has flown by since we moved here.
- The semester has flown by.
- The last few weeks have flown by.
- Time has really flown by since our wedding.
- The first six months have flown by.
The present perfect makes the sentence feel connected to now.
“Time Had Flown By”: Using the Past Perfect
There’s another correct form worth knowing: “time has flown by.”
This uses the past perfect tense.
The structure is:
had + past participle
For example:
By the time we looked at the clock, the evening had flown by.
The speaker describes one past event in relation to another past point.
Compare:
- Time has flown by. — connected to the present
- Time flew by. — simple past
- Time had flown by. — connected to another past event
Again, flew isn’t used after had.
Therefore:
Time had flown by. ✅
Time had flew by. ❌
Common Mistakes With Flew and Flown
These mistakes usually happen because flew feels like the obvious past form.
Mistake: Time Has Flew By
Incorrect: Time has flew by.
Correct: Time has flown by.
The auxiliary requires the past participle flown.
Mistake: Time Had Flew By
Incorrect: Time had flew by.
Correct: Time had flown by.
The same rule applies to hands.
Mistake: The Years Has Flown By
Incorrect: The years has flown by.
Correct: The years have flown by.
Here, the problem isn’t flown. The issue is subject-verb agreement.
Years is plural, so it requires having.
Mistake: Time Flew By This Year
This sentence isn’t automatically wrong. Context determines whether it works.
If the year has already ended, “Time flew by this year” can work naturally.
If you’re speaking while the year is still unfolding, “Time has flown by this year” is usually the more natural choice.
Time Has Flown By or. Time Flew By
| Feature | Time Has Flown By | Time Flew By |
| Tense | Present perfect | Simple past |
| Verb | Flown | Flew |
| Auxiliary | Has | None |
| Focus | Past connected to now | Completed past |
| Example | Time has flown by this year. | Time flew by last summer. |
The difference is subtle but important.
If you’re standing in December and reflecting on the year so far, you might say:
Time has flown by this year.
If you’re remembering a vacation from last year, you might say:
Time flew by during that vacation.
“Time Has Flown By” or. Similar Expressions
English offers several ways to express the same basic idea.
| Expression | Meaning | Tone |
| Time has flown by | Time passed very quickly | Natural, expressive |
| Time flew by | Time passed quickly | Casual |
| Time has gone by quickly | Time passed quickly | Neutral |
| Time has passed quickly | Time moved quickly | More direct |
| The years have flown by | Many years passed quickly | Reflective |
| The days have slipped by | Days passed quietly or quickly | More figurative |
Among these, “time has flown by” has a particularly vivid quality. It makes passing time feel almost physical, as though it moved past you before you could catch it.
A Simple Trick to Remember Flew or. Flown
The easiest rule is this:
Has, have, or had → flown.
Simple past without those auxiliaries → flew.
Remember the complete pattern:
fly → flew → flown
Then compare:
- Time flies.
- Time flew by.
- Time has flown by.
- Time had flown by.
A useful memory trick is to associate flew with a completed past action and flown with has, have, or had.
This small distinction prevents one of the most common mistakes involving the verb fly.
Case Study: Choosing the Right Form in Context
Consider someone talking about a three-month project.
At the beginning, they might say:
Time flies when you’re busy.
During the project, they could say:
The last three months have flown by.
After the project ends, they might reflect:
Those three months flew by.
All three sentences can be correct because each one presents the passage of time from a different grammatical viewpoint.
The important lesson is that verb tense follows context. You shouldn’t choose flew or flown simply because both refer to something that happened in the past.
Read More:Usage or Useage: Which Spelling Is Correct?
Conclusion
Understanding the difference between flew and flown makes English grammar much easier. Flew is the simple past form of fly, while flown is the past participle used with helping verbs such as has, have, and had. Remembering this simple rule will help you avoid common mistakes in both everyday and formal writing.
FAQs
Q1. Is “time has flew by” correct?
No. The correct expression is “time has flown by” because has must be followed by the past participle flown.
Q2. Is “flew” a past tense word?
Yes. Flew is the simple past tense of fly. For example: “The bird flew across the sky.”
Q3. What is the past participle of “fly”?
The past participle of fly is flown. For example: “The plane has flown over the city.”
Q4. Can I say “I have flew”?
No. You should say “I have flown.” The helping verb requires the past participle flown.
Q5. What is the difference between flew and flown?
Flew is used as the simple past form, while flown is used with helping verbs such as has, have, and had.
Q6. Is “she has flew” grammatically correct?
No. The correct sentence is “She has flown.” You cannot use flew after has.
