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Cheap flights from St. Louis to Portland (STL - PDX) from $51

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 5/20. 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 — PDX
Apr 30 — May 71
From?
To?
Tue 4/30
Tue 5/7
1 adult, Economy
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The best prices from Lambert-St Louis to Portland are usually found in September or January, booked 53 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap flight deals from St. Louis to Portland

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Portland (PDX). 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 April 25, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$276

One-way from

$141
High demand for flights, 17% potential price rise
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Best time to find cheap flights, 17% potential price drop
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From Lambert-St Louis to Portland
Search Deals
One-way flight from Lambert-St Louis to Portland
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What is the cheapest day to fly round-trip from St. Louis to Portland?

Saturday flights are generally found to be more expensive for flights from St. Louis to Portland. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Portland.

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

To save on the cost of your flight from St. Louis to Portland, book at least 54 days before your planned departure. Booking around this time can save you about 51% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $222 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $421.

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

The best pricing can be found in the month of September. Prices to Portland from St. Louis average $436. You can even find prices in September for less than $436, as users have found deals to Portland from as low as $167. The month of December appears to be one of the more expensive times to travel to Portland from St. Louis. Flying in the targeted month can save you up to 20%.

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

When flying from St. Louis to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 34% versus a flight at noon.

Cheap Delta flights from St. Louis to Portland

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Portland. 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 3,068,701 searches. Data last updated April 25, 2024.
Peruse some of the lowest-priced Delta flights we've found from St. Louis to Portland. Make sure to check back often as deals are often changing.
Tue 8/132:20 pmSTL - PDX
2 stops8h 25mDelta
Sat 8/2410:55 pmPDX - STL
1 stop8h 35mDelta
Deal found 4/24$312
Fri 5/311:54 amSTL - PDX
1 stop8h 27mDelta
Fri 5/312:50 amPDX - STL
1 stop8h 09mDelta
Deal found 4/24$322
Tue 4/305:40 pmSTL - PDX
1 stop7h 49mDelta
Wed 5/15:26 pmPDX - STL
1 stop5h 12mDelta
Deal found 4/24$329
Wed 5/156:11 amSTL - PDX
1 stop7h 13mDelta
Thu 5/302:14 pmPDX - STL
2 stops8h 32mDelta
Deal found 4/24$346
Mon 6/32:28 pmSTL - PDX
2 stops8h 10mDelta
Fri 6/712:30 amPDX - STL
1 stop8h 00mDelta
Deal found 4/24$358
Fri 5/33:06 pmSTL - PDX
2 stops11h 01mDelta
Fri 5/1012:40 amPDX - STL
1 stop8h 30mDelta
Deal found 4/25$508
Tue 4/305:30 pmSTL - PDX
2 stops8h 37mDelta
Wed 5/15:26 pmPDX - STL
1 stop5h 12mDelta
Deal found 4/24$552
Tue 4/307:20 amSTL - PDX
2 stops9h 15mDelta
Wed 5/15:26 pmPDX - STL
1 stop5h 12mDelta
Deal found 4/23$597
Tue 4/307:20 amSTL - PDX
2 stops9h 15mDelta
Mon 5/612:40 amPDX - STL
1 stop8h 30mDelta
Deal found 4/24$717

Cheap Frontier flights from St. Louis to Portland

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and Portland. 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 3,068,701 searches. Data last updated April 25, 2024.
Some of the lowest-priced Frontier flights we've found at this time heading from St. Louis to Portland. Deals are refreshing constantly so come back soon for more options.
Mon 5/2010:21 pmSTL - PDX
1 stop12h 28mFrontier
Thu 5/2310:54 pmPDX - STL
1 stop9h 19mFrontier
Deal found 4/24$116
Wed 5/157:51 pmSTL - PDX
1 stop28h 13mFrontier
Wed 5/228:20 pmPDX - STL
2 stops11h 53mFrontier
Deal found 4/24$120
Wed 5/158:04 pmSTL - PDX
2 stops25h 08mFrontier
Wed 5/228:20 pmPDX - STL
2 stops11h 53mFrontier
Deal found 4/24$125
Thu 5/910:59 pmSTL - PDX
1 stop12h 16mFrontier
Sat 5/1112:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$128
Thu 5/910:59 pmSTL - PDX
2 stops15h 27mFrontier
Sat 5/1112:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$133
Thu 5/910:59 pmSTL - PDX
1 stop12h 16mFrontier
Sun 5/1210:15 amPDX - STL
1 stop9h 42mFrontier
Deal found 4/24$139
Wed 5/158:04 pmSTL - PDX
1 stop12h 44mFrontier
Mon 5/208:40 amPDX - STL
1 stop10h 51mFrontier
Deal found 4/24$142
Sat 5/188:04 pmSTL - PDX
1 stop15h 07mFrontier
Sun 5/1912:48 amPDX - STL
1 stop6h 48mFrontier
Deal found 4/24$143
Thu 5/910:59 pmSTL - PDX
2 stops15h 27mFrontier
Sun 5/1210:15 amPDX - STL
1 stop9h 42mFrontier
Deal found 4/24$144

Cheap St. Louis to Portland flights in April & May 2024

Find cheap flight options from St. Louis to Portland specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,068,701 searches. Prices were last updated on April 25, 2024.
Scroll through some of the best deals on flights from St. Louis to Portland in 2024. Check back regularly for other flight deals.
Mon 5/2010:21 pmSTL - PDX
1 stop12h 28mFrontier
Thu 5/2310:54 pmPDX - STL
1 stop9h 19mFrontier
Deal found 4/24$116
Wed 5/157:51 pmSTL - PDX
1 stop28h 13mFrontier
Wed 5/228:20 pmPDX - STL
2 stops11h 53mFrontier
Deal found 4/24$120
Wed 5/158:04 pmSTL - PDX
2 stops25h 08mFrontier
Wed 5/228:20 pmPDX - STL
2 stops11h 53mFrontier
Deal found 4/24$125
Wed 5/1511:36 amSTL - PDX
1 stop14h 31mMultiple Airlines
Mon 5/208:40 amPDX - STL
1 stop10h 51mMultiple Airlines
Deal found 4/25$127
Thu 5/910:59 pmSTL - PDX
1 stop12h 16mFrontier
Sat 5/1112:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$128
Thu 5/910:59 pmSTL - PDX
2 stops15h 27mFrontier
Sat 5/1112:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$133
Thu 5/910:59 pmSTL - PDX
1 stop12h 16mFrontier
Sun 5/1210:15 amPDX - STL
1 stop9h 42mFrontier
Deal found 4/24$139
Wed 5/158:04 pmSTL - PDX
1 stop12h 44mFrontier
Mon 5/208:40 amPDX - STL
1 stop10h 51mFrontier
Deal found 4/24$142
Sat 5/188:04 pmSTL - PDX
1 stop15h 07mFrontier
Sun 5/1912:48 amPDX - STL
1 stop6h 48mFrontier
Deal found 4/24$143

St. Louis to Portland 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Portland in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,068,701 searches. Data last updated April 25, 2024.
Scroll through some of the best deals on flights from St. Louis to Portland in 2024. Check back regularly for other flight deals.
Mon 5/2010:21 pmSTL - PDX
1 stop12h 28mFrontier
Thu 5/2310:54 pmPDX - STL
1 stop9h 19mFrontier
Deal found 4/24$116
Wed 5/157:51 pmSTL - PDX
1 stop28h 13mFrontier
Wed 5/228:20 pmPDX - STL
2 stops11h 53mFrontier
Deal found 4/24$120
Wed 5/158:04 pmSTL - PDX
2 stops25h 08mFrontier
Wed 5/228:20 pmPDX - STL
2 stops11h 53mFrontier
Deal found 4/24$125
Wed 5/1511:36 amSTL - PDX
1 stop14h 31mMultiple Airlines
Mon 5/208:40 amPDX - STL
1 stop10h 51mMultiple Airlines
Deal found 4/25$127
Thu 5/910:59 pmSTL - PDX
1 stop12h 16mFrontier
Sat 5/1112:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$128
Thu 5/910:59 pmSTL - PDX
2 stops15h 27mFrontier
Sat 5/1112:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$133
Thu 5/910:59 pmSTL - PDX
1 stop12h 16mFrontier
Sun 5/1210:15 amPDX - STL
1 stop9h 42mFrontier
Deal found 4/24$139
Wed 5/158:04 pmSTL - PDX
1 stop12h 44mFrontier
Mon 5/208:40 amPDX - STL
1 stop10h 51mFrontier
Deal found 4/24$142
Sat 5/188:04 pmSTL - PDX
1 stop15h 07mFrontier
Sun 5/1912:48 amPDX - STL
1 stop6h 48mFrontier
Deal found 4/24$143

St. Louis to Portland flights leaving soon

Find last-minute flight options from St. Louis to Portland 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 3,068,701 searches. Data last updated April 25, 2024.
Have a look at some of the flights available from St. Louis to Portland departing last-minute. It's wise to confirm all flight details are correct before booking.
Wed 5/18:04 pmSTL - PDX
1 stop13h 12mFrontier
Fri 5/1010:16 pmPDX - STL
1 stop11h 23mFrontier
Deal found 4/24$148
Wed 5/18:04 pmSTL - PDX
2 stops21h 48mFrontier
Fri 5/1010:16 pmPDX - STL
1 stop11h 23mFrontier
Deal found 4/24$153
Wed 5/18:04 pmSTL - PDX
1 stop13h 12mFrontier
Tue 5/712:59 amPDX - STL
1 stop6h 48mFrontier
Deal found 4/24$155
Fri 5/37:51 pmSTL - PDX
1 stop15h 29mFrontier
Sat 5/1110:20 amPDX - STL
1 stop21h 58mFrontier
Deal found 4/25$157
Thu 5/210:59 pmSTL - PDX
1 stop12h 16mFrontier
Fri 5/1010:16 pmPDX - STL
1 stop11h 23mFrontier
Deal found 4/24$159
Thu 5/210:59 pmSTL - PDX
2 stops15h 27mFrontier
Fri 5/1010:16 pmPDX - STL
1 stop11h 23mFrontier
Deal found 4/24$164
Thu 5/210:59 pmSTL - PDX
1 stop12h 16mFrontier
Tue 5/712:59 amPDX - STL
1 stop6h 48mFrontier
Deal found 4/24$165
Wed 5/18:04 pmSTL - PDX
1 stop13h 12mFrontier
Sat 5/412:59 amPDX - STL
1 stop11h 30mFrontier
Deal found 4/24$170
Fri 5/35:35 pmSTL - PDX
1 stop8h 24mFrontier
Fri 5/1012:49 amPDX - STL
1 stop6h 58mFrontier
Deal found 4/25$174

One-way flights to Portland from St. Louis

Search for one-way flight options from St. Louis to Portland. 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 3,068,701 searches. Data last updated April 25, 2024.
Users traveling one-way from St. Louis to Portland can select one of these great deals. Users needing a return flight from St. Louis to Portland should utilize the search form above.
Mon 5/2010:21 pmSTL - PDX
1 stop12h 28mFrontier
Deal found 4/23$51
Sat 5/188:04 pmSTL - PDX
1 stop15h 07mFrontier
Deal found 4/23$55
Wed 5/811:36 amSTL - PDX
1 stop14h 31mSpirit Airlines
Deal found 4/24$64
Wed 5/88:04 pmSTL - PDX
1 stop13h 12mFrontier
Deal found 4/24$65
Wed 5/88:04 pmSTL - PDX
2 stops21h 48mFrontier
Deal found 4/24$74
Fri 5/1710:21 pmSTL - PDX
1 stop11h 43mFrontier
Deal found 4/23$75
Wed 5/158:04 pmSTL - PDX
1 stop12h 44mFrontier
Deal found 4/24$81
Wed 6/1211:36 amSTL - PDX
1 stop11h 33mSpirit Airlines
Deal found 4/24$84
Wed 5/111:33 amSTL - PDX
1 stop25h 41mSpirit Airlines
Deal found 4/24$86

Find flights from St. Louis to Portland within your budget

Customize your flight search to find flights from St. Louis to Portland 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 3,068,701 searches. Data last updated April 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$116 - $330

Route

Depart

Return

Price

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 5/20

1 stop12h 28m

Portland

Thu 5/23

1 stop9h 19m

$116

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 5/15

1 stop28h 13m

Portland

Wed 5/22

2 stops11h 53m

$120

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 5/15

2 stops25h 08m

Portland

Wed 5/22

2 stops11h 53m

$125

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 5/15

1 stop14h 31m

Portland

Mon 5/20

1 stop10h 51m

$127

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 5/9

1 stop12h 16m

Portland

Sat 5/11

1 stop11h 30m

$128

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 5/15

1 stop14h 31m

Portland

Mon 5/20

2 stops12h 07m

$195

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 6/18

1 stop6h 50m

Portland

Tue 6/25

1 stop15h 23m

$267

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 8/13

2 stops8h 25m

Portland

Sat 8/24

1 stop8h 35m

$312

Lambert-St LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sun 7/21

1 stop18h 10m

Portland

Fri 7/26

1 stop18h 51m

$330

Flights are sorted by cheapest first

Deals found on 4/24

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Portland. Price data was last updated on January 28, 2024.
Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Portland. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Portland. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Portland flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Portland by month

Plan your trip from St. Louis to Portland by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Portland is currently $71 while a round-trip flight costs $191. Price data was last updated on April 21, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Portland (average of $276). Flying from St. Louis to Portland in July is currently the most expensive (average of $408). 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

$276

February

$306

March

$336

April

$303

May

$339

June

$388

July

$408

August

$347

September

$295

October

$276

November

$298

December

$292

Temperature and rainfall in Portland by month

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

PDX

Temperature

41 - 69.8 °F

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated April 25, 2024.
Read through reviews of airlines operating flights from St. Louis to Portland, such as Delta, Frontier and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,114 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

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

Alaska Airlines
8.1
Very good
9,114 reviews
Alaska Airlines
8.1
Very good
9,114 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

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

Delta
8.1
Very good
10,975 reviews
Alaska Airlines
8.1
Very good
9,114 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

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

United Airlines
7.4
Good
11,234 reviews
Alaska Airlines
8.1
Very good
9,114 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

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

American Airlines
7.3
Good
14,898 reviews
Alaska Airlines
8.1
Very good
9,114 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.3

Overall

8.1

Reviews

1 / 10

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

Sun Country Air
7.3
Good
659 reviews
Alaska Airlines
8.1
Very good
9,114 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.3

Overall

8.1

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 Portland. 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 Portland for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Portland for under $200. The cheapest flight booked recently is on Frontier for just $116, but on average you can expect to pay $148.

  • Are there last-minute flights available from St. Louis to Portland for under $200?

    There are currently 20+ open flights from St. Louis to Portland within the next 7 days for less than $200.

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

    Currently priced at $116, Frontier will fly you from St. Louis to Portland and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Spirit Airlines for as low as $195. These flights start at 73% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $51. Spirit Airlines flights start at $64 while deals on American Airlines start at $161 one-way.

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

    When booking a flight from St. Louis to Portland, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

  • What does STL to PDX mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Portland Airport flight would often be abbreviated as a STL to PDX flight.

  • Where are the most common layover locations when flying from St. Louis to Portland?

    St. Louis to Portland flights have a layover in Denver most of the time.

  • What are some popular things to do or see while on a layover in Denver?

    Denver travelers tend to visit Coors Field, 16th Street Mall, and Civic Center Park more than anywhere else. Coors Field, 16th Street Mall, and Civic Center Park can be accessed by traveling approximately 18.4 mi, 18.7 mi, and 18.7 mi, respectively from Denver Intl. Those looking to explore during their layover in Denver can rent a car from Denver Intl for about $47 per day.

  • Where are the least popular layover locations for St. Louis to Portland flights?

    Flights departing from St. Louis and landing in Portland layover in Salt Lake City least frequently.

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

    The amount of baggage you can bring on your St. Louis to Portland 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 Portland with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Portland 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 Portland that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Portland 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 Portland that allow pets onboard?

    Many airlines flying from St. Louis to Portland 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 Portland?

    Yes, you can often find last-minute deals on St. Louis to Portland 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 Portland flight deals updated?

    The St. Louis to Portland flight deals you see on this page were last updated on 4/25.

See more FAQs

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Alternative routes for St. Louis to Portland
See prices for flight routes from nearby airports that may be better suited for you.

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Top 6 airlines flying from St. Louis to Portland

Discover the top 6 airlines that operate flights from St. Louis to Portland. 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 3,068,701 searches. Data last updated April 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$226FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$114Average$220FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Alaska AirlinesCheapest$259Average$408FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
American AirlinesCheapest$293Average$473FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$296Average$421FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$306Average$462FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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St. Louis to Peru flights

Search flights from St. Louis to Portland by cabin class

Find flights from St. Louis to Portland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to Portland

Find hourly flight availability from St. Louis to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2024.
0%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
100%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Portland

Explore weekly flight availability from St. Louis to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 25, 2024.
Sunday1daily flight
Monday0daily flights
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Can Cheapflights notify me if prices for flights from St. Louis to Portland become cheaper?

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