Cheap Flights to Southwest Illinois

View ฿4,865 flight on Wed, 20 May 2026Opens in a new window

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Cheap round-trip flights to Southwest Illinois

Prices were available within the past 7 days and start at ฿4,865 for one-way flights and ฿12,135 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

United
Wed, 20 May - Sun, 24 May
YVR
Vancouver
STL
St. Louis
฿12,135 Return, found 13 hours ago
฿12,135
Return
found 13 hours ago
Select United flight, departing Wed, 20 May from Vancouver to St. Louis, returning Sun, 24 May, priced at ฿12,135 found 13 hours ago
Delta
Wed, 20 May - Sun, 24 May
YVR
Vancouver
STL
St. Louis
฿12,295 Return, found 13 hours ago
฿12,295
Return
found 13 hours ago
Select Delta flight, departing Wed, 20 May from Vancouver to St. Louis, returning Sun, 24 May, priced at ฿12,295 found 13 hours ago
Air Canada
Mon, 25 May - Sat, 30 May
YVR
Vancouver
STL
St. Louis
฿12,515 Return, found 2 days ago
฿12,515
Return
found 2 days ago
Select Air Canada flight, departing Mon, 25 May from Vancouver to St. Louis, returning Sat, 30 May, priced at ฿12,515 found 2 days ago
American Airlines
Wed, 20 May - Sun, 24 May
YVR
Vancouver
STL
St. Louis
฿12,855 Return, found 13 hours ago
฿12,855
Return
found 13 hours ago
Select American Airlines flight, departing Wed, 20 May from Vancouver to St. Louis, returning Sun, 24 May, priced at ฿12,855 found 13 hours ago
Philippine Airlines
Tue, 1 Sept - Wed, 16 Sept
BKK
Bangkok
STL
St. Louis
฿29,230 Return, found 1 day ago
฿29,230
Return
found 1 day ago
Select Philippine Airlines flight, departing Tue, 1 Sept from Bangkok to St. Louis, returning Wed, 16 Sept, priced at ฿29,230 found 1 day ago

Frequently asked questions

How do I find cheap flights to Southwest Illinois that have flexible change policies?
By using our neat "No change fee" filter, that's how. Just enter your travel details, click "Search," then tick the checkbox directly underneath the "Flexible change policies" heading (top left-hand side of your screen). Expedia makes it a cinch to find flexible and affordable tickets to Southwest Illinois.
Which airlines fly to Southwest Illinois?
When you're ready to reserve your ticket to or near Southwest Illinois, these popular carriers are waiting to welcome you on board:

  • Southwest Airlines - 2,214 flights to or near Southwest Illinois each month, including 2,214 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • American Airlines - 971 flights to or near Southwest Illinois each month, including 789 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 728 flights to or near Southwest Illinois each month, including 650 flights to Lambert-St. Louis Intl. Airport (STL) per month.

How can I find cheap tickets to Southwest Illinois?
In the last seven days, ฿12,135 was the best price for a flight to Southwest Illinois. If you'd love to save even more, book in advance and be flexible with your travel dates. Search for your flight to Southwest Illinois, then see prices for similar time frames by clicking on the "flexible dates" link above.
How much is a flight to Southwest Illinois?
In the last seven days, round-trip tickets to Southwest Illinois sold for as little as ฿12,135 and reached a maximum price of ฿29,230. For one-way trips departing from Vancouver (YVR), the lowest amount paid during this time was only ฿4,865.
What are the most popular airports to fly into in Southwest Illinois?
Choosing your airport comes down to factors including your airline, budget and where you plan to explore. These are your choices in Southwest Illinois:

  • Lambert-St. Louis Intl. Airport (STL) - 4,902 flights per month.
  • Evansville Regional Airport (EVV) - 277 flights per month.

How much is a plane ticket to Southwest Illinois?
In the last seven days, plane tickets to Southwest Illinois ranged between ฿12,135 and ฿29,230. Prices depend on multiple things, particularly the time of departure, carrier, cabin class and when the fare is booked.
What months are the cheapest to book a flight to Southwest Illinois?
The most affordable month to score a terrific deal to Southwest Illinois is February, while the priciest month is December. Avoid this month if you're looking to save money.

Book with confidence

Flights to Southwest Illinois

Searching for cheap flights to Southwest Illinois? No travel company presents more choices than Expedia if you're looking to compare flights to Southwest Illinois. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Southwest Illinois. Expedia provides the cheapest flights to Southwest Illinois and you may find even greater savings if you combine your flight to Southwest Illinois with a hotel stay. Travellers who are flexible about flight times can benefit from last minute cheap flights to Southwest Illinois.

Expedia is the largest online travel agency which means that Expedia have access to cheap airline tickets. So make sure you check Expedia regularly for these bargain flights because the cheapest airline ticket deals sell out fast.

Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Southwest Illinois for that period and let you choose your preferred time and airline.

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Return price
฿12,135

Trending flights to Southwest Illinois

Prices were available within the past 7 days and start at ฿4,865 for one-way flights and ฿12,135 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Tue, 1 Sept - Wed, 16 Sept
BKK
Bangkok
STL
St. Louis
฿29,230 Return, found 1 day ago
฿29,230
Return
found 1 day ago
Select Philippine Airlines flight, departing Tue, 1 Sept from Bangkok to St. Louis, returning Wed, 16 Sept, priced at ฿29,230 found 1 day ago
*Available to Expedia members.