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Cheap flights from St. Louis to Boise (STL - BOI) from $182

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — BOI
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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The best prices from Lambert-St Louis to Boise Air Term. Gowen Fld are usually found in January or February, booked 68 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to Boise

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2024.

Popular in

March

Cheapest in

January

Round-trip from

$311

One-way from

$189
High demand for flights, 28% potential price rise
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Best time to find cheap flights, 26% potential price drop
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From Lambert-St Louis to Boise Air Term. Gowen Fld
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One-way flight from Lambert-St Louis to Boise Air Term. Gowen Fld
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What is the cheapest day to fly round-trip from St. Louis to Boise?

Users have found that flying from St. Louis to Boise on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from St. Louis to Boise?

Find a great deal and save up to 119% by booking at least 18 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Boise within the next two weeks, with the cheapest ticket starting at $379.

What is the cheapest month to fly from St. Louis to Boise?

Flights from St. Louis to Boise lean towards being more expensive in March. Prices are generally better when you fly from St. Louis to Boise in January, with the cheapest ticket starting at $298.

When is the cheapest time to fly from St. Louis to Boise (STL - BOI)?

When flying from St. Louis to Boise, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 13% versus a flight in the afternoon.

Cheap American Airlines flights from St. Louis to Boise

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Boise. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Take a peek at the cheapest American Airlines flights we've detected traveling from St. Louis to Boise. Be sure to come back soon if the deals available don't appeal to you at this time.
Mon 7/15:27 amSTL - BOI
1 stop6h 33mAmerican Airlines
Tue 7/912:51 amBOI - STL
1 stop7h 38mAmerican Airlines
Deal found 5/15$303
Mon 7/16:11 pmSTL - BOI
1 stop6h 05mAmerican Airlines
Wed 7/105:12 pmBOI - STL
1 stop5h 43mAmerican Airlines
Deal found 5/15$335
Sun 6/165:27 amSTL - BOI
1 stop6h 33mAmerican Airlines
Mon 6/173:33 pmBOI - STL
1 stop6h 24mAmerican Airlines
Deal found 5/15$366
Mon 7/112:44 pmSTL - BOI
2 stops11h 32mAmerican Airlines
Tue 7/912:51 amBOI - STL
1 stop7h 38mAmerican Airlines
Deal found 5/15$523
Sat 5/259:51 amSTL - BOI
2 stops13h 02mAmerican Airlines
Fri 5/315:15 pmBOI - STL
1 stop5h 41mAmerican Airlines
Deal found 5/14$531
Thu 6/136:11 pmSTL - BOI
1 stop6h 05mAmerican Airlines
Thu 6/206:35 amBOI - STL
2 stops11h 42mAmerican Airlines
Deal found 5/15$607
Thu 5/238:00 amSTL - BOI
1 stop6h 15mAmerican Airlines
Thu 5/2312:59 amBOI - STL
1 stop7h 03mAmerican Airlines
Deal found 5/15$695
Thu 5/238:00 amSTL - BOI
1 stop6h 15mAmerican Airlines
Thu 5/2312:59 amBOI - STL
2 stops9h 11mAmerican Airlines
Deal found 5/15$949
Thu 5/237:45 amSTL - BOI
2 stops10h 00mAmerican Airlines
Thu 5/2312:59 amBOI - STL
2 stops9h 11mAmerican Airlines
Deal found 5/15$1,219

Cheap Spirit Airlines flights from St. Louis to Boise

Explore cheap flight options specifically provided by Spirit Airlines for the route between St. Louis and Boise. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
To aid your search, here are some of the cheapest Spirit Airlines flights we've found from St. Louis to Boise. Deals are refreshing constantly so come back soon for more options.
Fri 6/213:07 pmSTL - BOI
1 stop22h 46mSpirit Airlines
Sun 6/239:13 pmBOI - STL
1 stop15h 38mSpirit Airlines
Deal found 5/15$337
Thu 6/136:22 pmSTL - BOI
3 stops43h 31mSpirit Airlines
Thu 6/209:13 pmBOI - STL
1 stop16h 03mSpirit Airlines
Deal found 5/15$439
Sun 6/165:22 pmSTL - BOI
3 stops26h 07mSpirit Airlines
Mon 6/179:13 pmBOI - STL
3 stops16h 10mSpirit Airlines
Deal found 5/15$475

Cheap St. Louis to Boise flights in May & June 2024

Find cheap flight options from St. Louis to Boise specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
These are some of the best deals we've found on flights to Boise in 2024 at this time. Check back soon for alternative fares.
Fri 6/213:07 pmSTL - BOI
1 stop22h 46mSpirit Airlines
Sun 6/239:13 pmBOI - STL
1 stop15h 38mSpirit Airlines
Deal found 5/15$337
Sun 6/165:27 amSTL - BOI
1 stop6h 33mAmerican Airlines
Mon 6/173:33 pmBOI - STL
1 stop6h 24mAmerican Airlines
Deal found 5/15$366
Sat 5/2511:39 amSTL - BOI
2 stops24h 46mMultiple Airlines
Fri 5/3110:54 amBOI - STL
3 stops24h 11mMultiple Airlines
Deal found 5/14$392
Thu 6/136:06 amSTL - BOI
1 stop5h 51mDelta
Thu 6/205:57 pmBOI - STL
1 stop6h 01mDelta
Deal found 5/15$396
Sat 5/2511:39 amSTL - BOI
3 stops33h 21mMultiple Airlines
Fri 5/3110:54 amBOI - STL
3 stops24h 11mMultiple Airlines
Deal found 5/14$404
Fri 6/217:30 pmSTL - BOI
2 stops18h 23mMultiple Airlines
Sun 6/239:13 pmBOI - STL
1 stop15h 38mMultiple Airlines
Deal found 5/15$407
Sun 6/166:30 amSTL - BOI
2 stops14h 53mMultiple Airlines
Mon 6/177:19 pmBOI - STL
3 stops18h 04mMultiple Airlines
Deal found 5/15$426
Sat 5/2511:39 amSTL - BOI
2 stops24h 46mMultiple Airlines
Fri 5/3110:54 amBOI - STL
2 stops22h 34mMultiple Airlines
Deal found 5/14$436
Sat 5/252:34 pmSTL - BOI
1 stop9h 26mAlaska Airlines
Fri 5/313:02 pmBOI - STL
1 stop7h 57mAlaska Airlines
Deal found 5/14$438

St. Louis to Boise 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Boise in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
These are some of the best deals we've found on flights to Boise in 2024 at this time. Check back soon for alternative fares.
Mon 7/15:27 amSTL - BOI
1 stop6h 33mAmerican Airlines
Tue 7/912:51 amBOI - STL
1 stop7h 38mAmerican Airlines
Deal found 5/15$303
Mon 7/16:11 pmSTL - BOI
1 stop6h 05mAmerican Airlines
Wed 7/105:12 pmBOI - STL
1 stop5h 43mAmerican Airlines
Deal found 5/15$335
Thu 8/86:59 pmSTL - BOI
1 stop5h 57mDelta
Mon 8/1211:55 pmBOI - STL
1 stop7h 57mDelta
Deal found 5/16$336
Fri 6/213:07 pmSTL - BOI
1 stop22h 46mSpirit Airlines
Sun 6/239:13 pmBOI - STL
1 stop15h 38mSpirit Airlines
Deal found 5/15$337
Sun 6/165:27 amSTL - BOI
1 stop6h 33mAmerican Airlines
Mon 6/173:33 pmBOI - STL
1 stop6h 24mAmerican Airlines
Deal found 5/15$366
Thu 8/86:59 pmSTL - BOI
1 stop5h 57mDelta
Mon 8/122:35 pmBOI - STL
2 stops9h 01mDelta
Deal found 5/16$390
Sat 5/2511:39 amSTL - BOI
2 stops24h 46mMultiple Airlines
Fri 5/3110:54 amBOI - STL
3 stops24h 11mMultiple Airlines
Deal found 5/14$392
Thu 6/136:06 amSTL - BOI
1 stop5h 51mDelta
Thu 6/205:57 pmBOI - STL
1 stop6h 01mDelta
Deal found 5/15$396
Sat 5/2511:39 amSTL - BOI
3 stops33h 21mMultiple Airlines
Fri 5/3110:54 amBOI - STL
3 stops24h 11mMultiple Airlines
Deal found 5/14$404

St. Louis to Boise flights leaving soon

Find last-minute flight options from St. Louis to Boise for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Have a look at some of the flights available from St. Louis to Boise departing last-minute. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Sat 5/2511:39 amSTL - BOI
2 stops24h 46mMultiple Airlines
Fri 5/3110:54 amBOI - STL
3 stops24h 11mMultiple Airlines
Deal found 5/14$392
Sat 5/2511:39 amSTL - BOI
3 stops33h 21mMultiple Airlines
Fri 5/3110:54 amBOI - STL
3 stops24h 11mMultiple Airlines
Deal found 5/14$404
Sat 5/2511:39 amSTL - BOI
2 stops24h 46mMultiple Airlines
Fri 5/3110:54 amBOI - STL
2 stops22h 34mMultiple Airlines
Deal found 5/14$436
Sat 5/252:34 pmSTL - BOI
1 stop9h 26mAlaska Airlines
Fri 5/313:02 pmBOI - STL
1 stop7h 57mAlaska Airlines
Deal found 5/14$438
Sat 5/259:51 amSTL - BOI
2 stops13h 02mAmerican Airlines
Fri 5/315:15 pmBOI - STL
1 stop5h 41mAmerican Airlines
Deal found 5/14$531
Thu 5/236:11 amSTL - BOI
1 stop7h 15mDelta
Fri 5/245:59 pmBOI - STL
1 stop5h 47mDelta
Deal found 5/15$542
Thu 5/238:00 amSTL - BOI
1 stop6h 15mAmerican Airlines
Thu 5/2312:59 amBOI - STL
1 stop7h 03mAmerican Airlines
Deal found 5/15$695
Thu 5/237:20 pmSTL - BOI
1 stop6h 26mAlaska Airlines
Fri 5/2410:45 amBOI - STL
2 stops11h 14mAlaska Airlines
Deal found 5/15$705
Tue 5/217:00 amSTL - BOI
1 stop8h 07mAlaska Airlines
Wed 5/229:00 amBOI - STL
1 stop8h 41mAlaska Airlines
Deal found 5/15$719

One-way flights to Boise from St. Louis

Search for one-way flight options from St. Louis to Boise. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Users traveling one-way from St. Louis to Boise can select one of these great deals. Those needing a return flight from St. Louis to Boise can use the search form above.
Sun 6/21:25 pmSTL - BOI
3 stops28h 05mMultiple Airlines
Deal found 5/14$182
Sun 6/27:55 amSTL - BOI
1 stop5h 27mDelta
Deal found 5/14$189
Sun 9/296:18 pmSTL - BOI
1 stop27h 27mSpirit Airlines
Deal found 5/15$222
Sun 9/297:31 pmSTL - BOI
2 stops19h 09mAlaska Airlines
Deal found 5/15$242
Sat 5/2511:39 amSTL - BOI
3 stops24h 46mMultiple Airlines
Deal found 5/15$249
Fri 5/244:05 pmSTL - BOI
1 stop29h 20mSpirit Airlines
Deal found 5/15$257
Fri 5/244:05 pmSTL - BOI
1 stop29h 20mSpirit Airlines
Deal found 5/15$267
Sat 5/255:21 amSTL - BOI
1 stop8h 24mAmerican Airlines
Deal found 5/15$286
Fri 5/248:35 pmSTL - BOI
3 stops24h 50mMultiple Airlines
Deal found 5/15$313

Find flights from St. Louis to Boise within your budget

Customize your flight search to find flights from St. Louis to Boise that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$303 - $545

Route

Depart

Return

Price

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Mon 7/1

1 stop6h 33m

Boise Air Term. Gowen Fld

Tue 7/9

1 stop7h 38m

$303

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Mon 7/1

1 stop6h 05m

Boise Air Term. Gowen Fld

Wed 7/10

1 stop5h 43m

$335

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Fri 6/21

1 stop22h 46m

Boise Air Term. Gowen Fld

Sun 6/23

1 stop15h 38m

$337

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Sun 6/16

1 stop6h 33m

Boise Air Term. Gowen Fld

Mon 6/17

1 stop6h 24m

$366

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Thu 6/13

1 stop5h 51m

Boise Air Term. Gowen Fld

Thu 6/20

1 stop6h 01m

$396

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Fri 6/21

2 stops18h 23m

Boise Air Term. Gowen Fld

Sun 6/23

1 stop15h 38m

$407

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Sun 6/16

2 stops14h 53m

Boise Air Term. Gowen Fld

Mon 6/17

3 stops18h 04m

$426

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Mon 7/1

1 stop9h 04m

Boise Air Term. Gowen Fld

Wed 7/10

2 stops12h 59m

$470

Lambert-St LouisBoise Air Term. Gowen Fld

STL - BOI

STLBOI

Lambert-St Louis

Mon 7/1

3 stops20h 54m

Boise Air Term. Gowen Fld

Wed 7/10

1 stop6h 44m

$545

Flights are sorted by cheapest first

Deals found on 5/15

When is the best time to book a flight from St. Louis to Boise?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Boise. Price data was last updated on May 10, 2024.
The price you pay for your flight from St. Louis to Boise may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from St. Louis to Boise?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Boise. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Boise flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Boise by month

Plan your trip from St. Louis to Boise by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Boise is currently $245 while a round-trip flight costs $398. Price data was last updated on May 12, 2024.

Currently, December is the cheapest month in which you can book a flight from St. Louis to Boise (average of $311). Flying from St. Louis to Boise in June is currently the most expensive (average of $444). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$316

February

$337

March

$393

April

$357

May

$401

June

$444

July

$430

August

$382

September

$366

October

$358

November

$316

December

$311

Temperature and rainfall in Boise by month

Plan your trip to Boise by taking into account the average temperature and rainfall totals by month.

BOI

Temperature

30.2 - 75.2 °F

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boise. Reviews last updated May 16, 2024.
See what other customers who have flown with American Airlines, Spirit Airlines and Delta from St. Louis to Boise have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Comfort

7.9

Entertainment

7.3

Food

7.3

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,157 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Comfort

7.9

Entertainment

7.3

Food

7.3

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,673 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Comfort

7.9

Entertainment

7.3

Food

7.3

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,924 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Comfort

7.9

Entertainment

7.3

Food

7.3

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,514 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Comfort

7.9

Entertainment

7.3

Food

7.3

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Spirit Airlines
6.4
Okay
8,672 reviews
Alaska Airlines
8.1
Very good
9,157 reviews
Check prices

Overall

8.1

Comfort

7.9

Entertainment

7.3

Food

7.3

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from St. Louis to Boise for under $400 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Boise for under $400. The cheapest flight booked recently is on American Airlines for just $303, but on average you can expect to pay $477.

  • Are there last-minute flights available from St. Louis to Boise for under $400?

    There are currently 17+ open flights from St. Louis to Boise within the next 7 days for less than $400.

  • What are the cheapest airlines flying from St. Louis to Boise round-trip?

    According to our current data, American Airlines ($303), Spirit Airlines ($337), and Delta ($396) offers the cheapest pricing from St. Louis to Boise. American Airlines is priced at 35% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Boise one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $189. Spirit Airlines flights start at $222 while deals on Alaska Airlines start at $242 one-way.

  • What are the most popular airlines that fly from St. Louis to Boise?

    Before booking your flight from St. Louis to Boise check out the most popular airlines for this route: American Airlines, Alaska Airlines or Delta.

  • What does STL to BOI mean?

    Great question - STL to BOI just means Lambert-St Louis Airport to Boise Air Term. Gowen Fld Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from St. Louis to Boise that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Boise flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Boise with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Boise flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Boise that include hotel bookings?

    Yes. In addition to deals on St. Louis to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Boise.

  • Can I find deals for business class flights from St. Louis to Boise?

    Yes. Cheapflights offers flight deals from St. Louis to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Boise that allow pets onboard?

    Many airlines flying from St. Louis to Boise offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Boise?

    Yes, you can often find last-minute deals on St. Louis to Boise flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Boise flight deals updated?

    The St. Louis to Boise flight deals you see on this page were last updated on 5/16.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from St. Louis to Boise

Discover the top 5 airlines that operate flights from St. Louis to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$197Average$250FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$296Average$465FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapest$304Average$388FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
American AirlinesCheapest$307Average$549FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$316Average$513FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from St. Louis to Boise by cabin class

Find flights from St. Louis to Boise, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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