Flights from Idaho Falls to St Louis, United States

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Idaho Falls to St Louis Last modified: Jan 30, 2023 18:50 -05:00

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How Much is a Flight from Idaho Falls to St Louis?

We have collected flight cost data from across the web for travel from Idaho Falls to St Louis, and have found the average flight price for this trip to be $607.

Where To Buy Cheap Flights from Idaho Falls to St Louis?

The best way to find a great deal on airfare is to search multiple sites. When you run a search on FareCompare, we search multiple sites and fare sources all at once so you don't have to - which is why we think FareCompare is the best place to find cheap tickets. Airlines can adjust prices for tickets from Idaho Falls to St Louis based on the day and time that you decide to book your flight. We have collected data from all airlines, and have found that Tuesdays, Wednesdays, and Saturdays are often the best days to book flights. If you'd like to learn more, read our article about the best time to buy airline tickets.

How far in advance should I book tickets from Idaho Falls to St Louis?

The chart below shows up-to-date information regarding how far in advance to book your flight from Idaho Falls to St Louis.

Non Stop versus Connecting
Advanced PurchaseNon StopConnecting
< 7 days $478 $520
7-14 days $0 $354
14-21 days $364 $966
21-30 days $0 $363
30-60 days $363 $339
60-90 days $0 $329
90+ days $0 $329

Cheapest Day To Fly from Idaho Falls to St Louis

We've examined 2,534 itinerary searches that we've seen for departures in the next 90 days and found that the cheapest day to fly from Idaho Falls to St Louis is Thursday. See the chart below to compare prices for other days of the week.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$663$509$888$339$520$363$966

Compare Flight Prices from Idaho Falls to St Louis by Month

Low priced flights are most commonly available by purchasing between one and three months in advance. International or holiday flights may need to be purchased even further in advance. The chart below shows the cheapest flight prices by month for Idaho Falls to St Louis flights.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Idaho Falls St Louis AeroMexico 5/13/22 5/17/22 2 $520
June Idaho Falls St Louis !! 6/12/22 6/30/22 2 $966
May Idaho Falls St Louis United 5/6/21 5/9/21 1 $339
June Idaho Falls St Louis Major Airlines 6/11/21 6/14/21 1 $429
July Idaho Falls St Louis United 7/25/21 7/30/21 1 $399
August Idaho Falls St Louis United 8/1/21 8/9/21 1 $448
August Idaho Falls St Louis Major Airlines 8/10/21 8/17/21 1 $309
October Idaho Falls St Louis United 10/6/21 10/8/21 1 $329

Cheap Last Minute Flights from Idaho Falls to St Louis

Looking for cheap last minute flights or a weekend getaway? We've got you covered with weekend flight deals from Idaho Falls to St Louis. The chart below shows the best last minute deals and cheap flights this weekend we could find.

Next 30 Days

SunMonTueWedThuFriSat
28 1 2 3 4 5 6
$477
7 8 9 10 11 12 13
$477
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31 1 2 3
$319
4 5 6 7 8 9 10
$319
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31 1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
$364
25 26 27 28 29 30 31
$364
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
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26 27 28 29 30 1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
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31 1 2 3 4 5 6
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14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31 1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
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27 28 29 30 31 1 2
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17 18 19 20 21 22 23
24 25 26 27 28 29 30
1 2 3 4 5 6 7
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$555
15 16 17 18 19 20 21
$555

Connecting Flights vs Direct Flights from Idaho Falls to St Louis

Flights between some cities may be significantly cheaper if you choose a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from Idaho Falls to St Louis is $966.

The average price for direct flights from Idaho Falls to St Louis is $363.

One Way Flights vs Round Trip Flights from Idaho Falls to St Louis

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Idaho Falls to St Louis. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from Idaho Falls to St Louis is $234.

The average price for round trip flights from Idaho Falls to St Louis is $966.

Idaho Falls to St Louis Flight Questions

Airlines in Idaho Falls flying to St Louis Last modified: Jan 30, 2023 18:50 -05:00Number of routes searched: 0Number of itineraries searched: 0

Wondering which airlines fly out of Idaho Falls to St Louis? We've gathered the average price of Idaho Falls airlines with flights to St Louis. Different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Idaho Falls to St Louis Airports

These are the major commercial airports we're currently monitoring in Idaho Falls and St Louis. If your route includes a city with multiple airports, you may be able to find substantial savings by choosing an alternate airport.

Farecompare Research Tools

FareCompare's Flight Schedule Search Tool helps you find information about airline schedule filings, including flight numbers, depart times, and travel distance.

Cheap Flights from Idaho Falls to St Louis