לפי לוח הזמנים, המטוס שלנו אמור לצאת בזמן.

לפי means according to or based on.

So לפי לוח הזמנים means according to the schedule.

It is a very common preposition in Hebrew:

• לפי החוק = according to the law
• לפי דעתי = in my opinion / according to my opinion

In your sentence, it sets the frame for the rest of the statement: the expectation comes from the schedule.

לוח הזמנים is the normal Hebrew expression for schedule or timetable.

Literally, it is something like:

• לוח = board, chart, table
• זמנים = times

So the phrase literally resembles the board/chart of times, but as a whole it simply means schedule.

This is a very common fixed expression, and learners should treat it as a vocabulary item.

This is because Hebrew is using the construct state here.

In a construct chain:

• the first noun usually does not take ה
• definiteness is usually shown on the second noun

So:

• לוח זמנים = a schedule
• לוח הזמנים = the schedule

Even though only הזמנים has ה, the whole phrase is definite.

This is a very important Hebrew pattern:

• בית ספר = a school
• בית הספר = the school

The comma separates an introductory phrase from the main clause.

The sentence begins with:

• לפי לוח הזמנים = according to the schedule

Then comes the main statement:

• המטוס שלנו אמור לצאת בזמן

In English, we also often use a comma this way:

• According to the schedule, our plane is supposed to leave on time.

In Hebrew, the comma is helpful but not always absolutely necessary in short sentences. Still, here it is very natural.

In modern Hebrew, possession is often expressed with:

• definite noun + של form / possessive word after it

So:

• המטוס שלנו = our plane
• literally: the plane of us

This is the normal word order.

Compare:

• הבית שלי = my house
• החברים שלנו = our friends
• המורה שלהם = their teacher

English puts our before the noun, but Hebrew usually puts שלי / שלך / שלנו after the noun.

Because in Hebrew, a noun with a possessive phrase like שלנו is usually definite.

So our plane is a specific plane, not just any plane. Hebrew normally marks that definiteness with ה on the noun:

• המטוס שלנו = our plane

Without ה, it would usually sound unnatural here.

This is different from English, where you do not say the our plane. In Hebrew, ה and שלנו work together naturally.

אמור ל... is a very common pattern meaning:

• is supposed to...
• is expected to...
• is meant to...

So אמור לצאת means:

• is supposed to leave
• is expected to depart

In this sentence, it does not necessarily mean obligation. It often expresses expectation based on a plan, schedule, rule, or assumption.

Examples:

• הוא אמור להגיע בחמש = he is supposed to arrive at five
• אנחנו אמורים להתחיל עכשיו = we are supposed to start now

Here, because the sentence begins with לפי לוח הזמנים, אמור is especially close to scheduled/expected.

Because אמור agrees with המטוס, and מטוס is:

• masculine
• singular

So the correct form is:

• אמור = masculine singular

Other forms would be:

• אמורה = feminine singular
• אמורים = masculine plural
• אמורות = feminine plural

For example:

• הרכבת אמורה לצאת בזמן = the train is supposed to leave on time
• המטוסים אמורים לצאת בזמן = the planes are supposed to leave on time

Because in the present tense, Hebrew usually does not use a separate word for is / are / am.

So where English says:

• The plane is supposed to leave

Hebrew can say:

• המטוס אמור לצאת

There is no present-tense equivalent of is in ordinary sentences like this.

This is one of the biggest differences from English. Hebrew often simply puts the parts next to each other without a present-tense copula.

לצאת is the infinitive, meaning to leave, to go out, or to depart, depending on context.

It comes from the root י-צ-א.

In this sentence, because the subject is a plane, לצאת means to depart / leave.

The ל־ at the beginning is the usual marker of the infinitive in Hebrew, similar to English to:

• ללכת = to go
• לאכול = to eat
• לצאת = to leave

Here, בזמן means on time.

So the idea is:

• the plane is expected to depart without delay
• it should leave at the scheduled time

In other contexts, בזמן can sometimes be understood more generally as in time, but with transportation and schedules, on time is the most natural meaning.

Compare:

• הרכבת הגיעה בזמן = the train arrived on time
• תבוא בזמן = come on time

Yes, Hebrew word order is somewhat flexible, but this version is very natural:

• לפי לוח הזמנים, המטוס שלנו אמור לצאת בזמן.

It starts with the contextual phrase according to the schedule, and then gives the main statement.

You could also say:

• המטוס שלנו אמור לצאת בזמן לפי לוח הזמנים

This is understandable, but it sounds a little less smooth in many contexts. Putting לפי לוח הזמנים first makes it clear right away that the statement is based on the schedule.

A common pronunciation guide would be:

lefi luach hazmanim, hamatos shelanu amur latzet bazman

A few notes:

• לפי = le-FI
• לוח = lu-ach (the last sound is the throaty ח)
• הזמנים = hazmanim
• המטוס = hamatos
• שלנו = shelanu
• אמור = amur
• לצאת = latzet
• בזמן = bazman

If you want to sound natural, try grouping it like this:

לפי לוח הזמנים | המטוס שלנו אמור לצאת בזמן