American AirlinesDepart12:13
Wed, Nov 18CMI → STL
2h 44m · 1 stop
$430one way, per person
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- Cheapest fare
- $430
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 2h 44m
American Airlines · Wed, Nov 18
from $430
Usually 1+ stop
240 km
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Cheapest month to fly from Champaign to St Louis
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Champaign to St Louis
Champaign (CMI) and St Louis (STL) are about 240 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 2h 44m. Over the next few months, one-way fares start from $430, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Champaign to St Louis?
The cheapest one-way fare we've seen recently is $430 with American Airlines, departing Wednesday, November 18, 2026.
What is the cheapest month to fly from Champaign to St Louis?
November 2026 currently has the lowest fares, from $430 one way.
Are there direct flights from Champaign to St Louis?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Champaign to St Louis?
The quickest journey we've seen takes about 2h 44m. Champaign and St Louis are around 240 km apart.
Which airlines fly from Champaign to St Louis?
Recent fares on this route were with American Airlines.
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