Meillä on välilasku toisessa kaupungissa, joten odotamme seuraavaa lentoa kaksi tuntia.

Finnish usually expresses possession with the structure [someone] + adessive case + on.

So:

• meillä = with us / at our side / in our situation
• on = is

Literally, Meillä on välilasku is something like At us there is a layover, but in natural English it means We have a layover.

This is the normal Finnish way to say have:

• Minulla on lippu. = I have a ticket.
• Hänellä on auto. = He/She has a car.
• Meillä on välilasku. = We have a layover.

Välilasku means layover, stopover, or literally an intermediate landing.

It is a compound word:

• väli = between, in-between
• lasku = descent, landing

So the idea is a landing that happens in between the start and the final destination.

In travel contexts, välilasku is a very common word.

Both words are in the inessive case, which usually means in.

• toinen → toisessa
• kaupunki → kaupungissa

So:

• kaupungissa = in the city
• toisessa kaupungissa = in another city or in the second city, depending on context

A very important point: in Finnish, adjectives usually agree with the noun in case and number. That is why both words get the same case ending.

Compare:

• suuressa kaupungissa = in a big city
• toisessa kaupungissa = in another city

It can mean either, depending on context.

The base word toinen can mean:

• second
• another
• the other

In this sentence, toisessa kaupungissa is most naturally understood as in another city, because that makes the most sense with a layover.

So Finnish often relies on context here more than English does.

Joten means so, therefore, or as a result.

It links the first idea to a consequence:

• Meillä on välilasku toisessa kaupungissa = We have a layover in another city
• joten odotamme... = so we wait...

It is a natural connector in written and neutral Finnish.

Very roughly:

• joten = so / therefore
• siksi = because of that / for that reason
• niin can also sometimes work as so, especially in speech, but not always in exactly the same way

Odotamme is the 1st person plural present tense of odottaa = to wait.

So:

• odotan = I wait
• odotat = you wait
• odottaa = he/she waits
• odotamme = we wait
• odotatte = you all wait
• odottavat = they wait

Here, the subject is we, even though Finnish does not need to say me explicitly. The verb ending already shows that.

In standard written Finnish, odotamme is correct. In spoken Finnish, you may often hear odotetaan instead of the standard odotamme, but that is a spoken-language feature.

Because the verb odottaa normally takes a partitive object.

So you say:

• odotan bussia = I am waiting for the bus
• odotamme lentoa = we are waiting for the flight

That is why both the adjective and the noun are in the partitive singular:

• seuraava → seuraavaa
• lento → lentoa

So:

• seuraavaa lentoa = the next flight

This is one of those patterns that learners usually need to memorize: odottaa is a verb that commonly uses the partitive object.

Finnish does not have articles like a/an and the.

That means definiteness is understood from context.

In this sentence, seuraavaa lentoa is naturally understood as the next flight, because the situation is specific: there is a known upcoming connecting flight.

So Finnish often leaves this to context, where English would use an article.

Because Finnish often expresses duration directly, without a preposition.

So:

• odotamme kaksi tuntia = we wait for two hours
• nukuin kahdeksan tuntia = I slept for eight hours
• hän työskenteli viikon = he/she worked for a week

English needs for here, but Finnish usually does not.

After numbers greater than one, Finnish usually uses the noun in the singular partitive.

So:

• yksi tunti = one hour
• kaksi tuntia = two hours
• kolme tuntia = three hours

That is why tuntia is correct.

Why not kaksi tunnit? Because after kaksi, Finnish does not use the plural nominative here.

Why not kahden tunnin? Because kahden tunnin is a different structure, usually used before another noun or in some fixed expressions:

• kahden tunnin lento = a two-hour flight
• kahden tunnin odotus = a two-hour wait

But after a verb to show duration, kaksi tuntia is the normal choice.

Not completely. Finnish word order is more flexible than English word order.

This sentence is perfectly understandable as:

• odotamme seuraavaa lentoa kaksi tuntia

But Finnish can often move time expressions around for emphasis or style. For example, a speaker might also say:

• odotamme kaksi tuntia seuraavaa lentoa

The meaning stays basically the same, but the emphasis may shift slightly.

In the original sentence, putting seuraavaa lentoa before kaksi tuntia sounds quite natural and keeps the object closely connected to the verb odotamme.