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$54+ Cheap flights from Portland to St. Louis (PDX - STL)

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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STL
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Portland to Lambert-St Louis are usually found in September or January, booked 30 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Portland to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to St. Louis (STL). 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 November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

September

Round-trip from

$226
(Delta)

One-way from

$54
(Frontier)
Provider with most accurate pricing for Portland-Lambert-St Louis flight deals.
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High demand for flights, 20% potential price rise
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Best time to find cheap flights, 20% potential price drop
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From Portland to Lambert-St Louis
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One-way flight from Portland to Lambert-St Louis
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Find flight deals from Portland to St. Louis

Cheapest flights from Portland to St. Louis
Explore the most affordable flight options available from Portland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/103:20 pmPDX - STL
2 stops7h 37mDelta
Wed 12/112:10 pmSTL - PDX
1 stop9h 53mDelta
Deal found 11/19$226
This Booking.com deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1312:03 pmPDX - STL
1 stop18h 10mFrontier
Sun 12/158:34 pmSTL - PDX
1 stop15h 13mFrontier
Deal found 11/18$231
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1112:45 pmPDX - STL
1 stop7h 28mUnited Airlines
Sat 12/147:00 amSTL - PDX
1 stop8h 10mUnited Airlines
Deal found 11/19$244
This Alaska Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/162:57 pmPDX - STL
1 stop7h 15mAlaska Airlines
Wed 1/16:30 amSTL - PDX
1 stop8h 42mAlaska Airlines
Deal found 11/19$352
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1612:35 pmPDX - STL
1 stop9h 37mAmerican Airlines
Wed 1/17:04 amSTL - PDX
1 stop8h 19mAmerican Airlines
Deal found 11/20$357
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:16 pmPDX - STL
3 stops19h 09mMultiple Airlines
Thu 12/125:00 pmSTL - PDX
3 stops32h 48mMultiple Airlines
Deal found 11/19$399
This Southwest deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/117:05 amPDX - STL
2 stops8h 10mSouthwest
Sat 12/1410:30 amSTL - PDX
2 stops9h 30mSouthwest
Deal found 11/19$478
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/207:19 pmPDX - STL
3 stops19h 43mSpirit Airlines
Sat 1/45:52 pmSTL - PDX
3 stops26h 30mSpirit Airlines
Deal found 11/19$737

Find flights from Portland to St. Louis within your budget

Customize your flight search to find flights from Portland to St. Louis 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/16

5:29 am-1:18 pm

1 stop5h 49m

Lambert-St Louis

Tue 1/21

6:00 am-12:55 pm

1 stop8h 55m

$212

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 12/13

12:03 pm-8:13 am

1 stop18h 10m

Lambert-St Louis

Sun 12/15

8:34 pm-9:47 am

1 stop15h 13m

$231

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 12/11

12:45 pm-10:13 pm

1 stop7h 28m

Lambert-St Louis

Sat 12/14

7:00 am-1:10 pm

1 stop8h 10m

$244

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 2/6

6:05 am-1:53 pm

1 stop5h 48m

Lambert-St Louis

Mon 2/10

2:49 pm-9:51 am

2 stops21h 02m

$269

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/16

10:16 am-4:45 pm

3 stops28h 29m

Lambert-St Louis

Tue 1/21

12:00 pm-8:46 pm

3 stops34h 46m

$331

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 12/16

12:35 pm-12:12 am

1 stop9h 37m

Lambert-St Louis

Wed 1/1

7:04 am-1:23 pm

1 stop8h 19m

$357

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 2/14

6:00 am-7:25 pm

2 stops11h 25m

Lambert-St Louis

Mon 2/17

5:30 am-11:10 am

1 stop7h 40m

$388

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 12/20

7:19 pm-5:02 pm

3 stops19h 43m

Lambert-St Louis

Sat 1/4

5:52 pm-6:22 pm

3 stops26h 30m

$737

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/23

10:37 am-7:31 pm

1 stop6h 54m

$54

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Sat 1/18

6:05 am-2:54 pm

1 stop6h 49m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 16 results
1
2

Compare providers for flights from Portland to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to St. Louis in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Portland to St. Louis

Get recent, data-driven insights about flights from Portland to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to St. Louis. Price data was last updated on November 15, 2024.

The best time to book flights from Portland to St. Louis is 30 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to St. Louis?

Currently, September is the cheapest month in which you can book a flight from Portland to St. Louis (average of $308). Flying from Portland to St. Louis in March is currently the most expensive (average of $357). 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.

What is the cheapest time of day to fly from PDX to STL?

Find hourly flight availability from Portland to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

Unlike in the morning, when flights are generally more expensive, you can save up to 35% on flights from Portland to St. Louis by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to St. Louis. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their Portland to St. Louis flight should consider departing on Thursday evenings 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated November 20, 2024.
Read through reviews of airlines operating flights from Portland to St. Louis, such as American Airlines, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

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

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

    Currently priced at $226, Delta will fly you from Portland to St. Louis and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Alaska Airlines - these airlines can fly you to your destination from $248 and $269, respectively. Users have found that Delta is 42% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $54. Delta flights start at $99 while deals on American Airlines start at $104 one-way.

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

    Portland to St. Louis flights have a layover in Salt Lake City most of the time.

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

    If you're on a layover in Salt Lake City and looking for things to do, consider visiting Temple Square, Abravanel Hall, or Salt Lake Temple. Temple Square, Abravanel Hall, and Salt Lake Temple are located about 4.7 mi, 4.7 mi, and 4.8 mi, respectively from Salt Lake City. Travelers can rent a car at Salt Lake City for an average daily rate of $52 to make sightseeing during their layover a little easier.

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

    Of the flights from Portland to St. Louis that have layovers, the fewest flights stop in Denver.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Portland to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Portland to St. Louis (average of $308). Flying from Portland to St. Louis in March is currently the most expensive (average of $357). 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.

See more FAQs

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Top 6 airlines flying from Portland to St. Louis

Discover the top 6 airlines that operate flights from Portland to St. Louis. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$209FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$198Average$426FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$396FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$225Average$441FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$287Average$479FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$514FlexibilityNo cancel feeOn-time63%
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