How popular is this St. Louis to Portland flight route?

Within the past month, 1 users have taken a look at flights from Lambert-St Louis to Portland.

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

Currently priced at $140, 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. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $227 and $228, respectively. These flights start at 61% 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 $60. American Airlines flights start at $114 while deals on Alaska Airlines start at $134 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.

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

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

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

Flights departing from St. Louis and landing in Portland layover in Denver least frequently.

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

Salt Lake City travelers tend to visit Temple Square, Abravanel Hall, and Salt Lake Temple more than anywhere else. Temple Square, Abravanel Hall, and Salt Lake Temple can be accessed by traveling approximately 4.7 mi, 4.7 mi, and 4.8 mi, respectively from Salt Lake City. Those looking to explore during their layover in Salt Lake City can rent a car from Salt Lake City for about $53 per day.

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

Thursday 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 16 days before your planned departure. Booking around this time can save you about 62% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $285 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $358.

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 $367. You can even find prices in September for less than $367, as users have found deals to Portland from as low as $149. The month of March 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 22%.

Most accurate provider : When it comes to deals on St. Louis-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Portland flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Portland 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 St. Louis-Portland flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$60+ Flights from St. Louis to Portland

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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The best prices from Lambert-St Louis to Portland are usually found in September or November, booked 89 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from St. Louis to Portland

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$140 (CheapOair)
One-way from	$60 (CheapOair)
Popular in	March
Cheapest in	September
Average price	$376

Provider with most accurate pricing for Lambert-St Louis-Portland flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Portland flights.

Search Deals

From Lambert-St Louis to Portland

Search Deals

One-way flight from Lambert-St Louis to Portland

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from St. Louis to Portland

Cheapest flights from St. Louis to Portland
Explore the most affordable flight options available from St. Louis to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Thu 5/84:07 pmSTL - PDX

1 stop10h 31mFrontier

Sun 5/116:20 amPDX - STL

1 stop24h 49mFrontier

Deal found 2/19

$140

Wed 3/197:03 pmSTL - PDX

1 stop7h 34mMultiple Airlines

Wed 4/21:25 pmPDX - STL

1 stop8h 34mMultiple Airlines

Deal found 2/18

$194

Thu 4/32:20 pmSTL - PDX

1 stop5h 47mDelta

Tue 4/85:40 amPDX - STL

1 stop5h 39mDelta

Deal found 2/19

$227

Tue 4/15:54 pmSTL - PDX

1 stop8h 36mUnited Airlines

Mon 4/711:30 pmPDX - STL

1 stop8h 28mUnited Airlines

Deal found 2/19

$228

Wed 4/166:44 amSTL - PDX

1 stop6h 08mAlaska Airlines

Wed 4/161:25 pmPDX - STL

1 stop8h 34mAlaska Airlines

Deal found 2/19

$241

Wed 5/75:00 amSTL - PDX

1 stop7h 33mAmerican Airlines

Thu 8/1411:59 pmPDX - STL

1 stop6h 56mAmerican Airlines

Deal found 2/18

$293

Wed 3/264:15 pmSTL - PDX

2 stops9h 25mSouthwest

Wed 4/21:40 pmPDX - STL

1 stop6h 45mSouthwest

Deal found 2/19

$338

Sat 2/223:21 pmSTL - PDX

1 stop8h 33mHawaiian Airlines

Wed 2/261:33 pmPDX - STL

1 stop8h 26mHawaiian Airlines

Deal found 2/20

$472

Best flights from St. Louis to Portland
Discover carefully curated flight deals from St. Louis to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Thu 5/84:07 pmSTL - PDX

1 stop10h 31mFrontier

Sun 5/116:20 amPDX - STL

1 stop24h 49mFrontier

Deal found 2/19

$140

Wed 3/197:03 pmSTL - PDX

1 stop7h 34mMultiple Airlines

Wed 4/21:25 pmPDX - STL

1 stop8h 34mMultiple Airlines

Deal found 2/18

$194

Thu 4/32:20 pmSTL - PDX

1 stop5h 47mDelta

Tue 4/85:40 amPDX - STL

1 stop5h 39mDelta

Deal found 2/19

$227

Tue 4/15:54 pmSTL - PDX

1 stop8h 36mUnited Airlines

Mon 4/711:30 pmPDX - STL

1 stop8h 28mUnited Airlines

Deal found 2/19

$228

Wed 4/166:44 amSTL - PDX

1 stop6h 08mAlaska Airlines

Wed 4/161:25 pmPDX - STL

1 stop8h 34mAlaska Airlines

Deal found 2/19

$241

Wed 5/75:00 amSTL - PDX

1 stop7h 33mAmerican Airlines

Thu 8/1411:59 pmPDX - STL

1 stop6h 56mAmerican Airlines

Deal found 2/18

$293

Wed 3/264:15 pmSTL - PDX

2 stops9h 25mSouthwest

Wed 4/21:40 pmPDX - STL

1 stop6h 45mSouthwest

Deal found 2/19

$338

Last-minute flights from St. Louis to Portland
Discover last-minute flight deals from St. Louis to Portland. Data last updated February 20, 2025 and is based on user searches.

Sat 2/223:21 pmSTL - PDX

1 stop8h 33mHawaiian Airlines

Wed 2/261:33 pmPDX - STL

1 stop8h 26mHawaiian Airlines

Deal found 2/20

$472

Tue 2/257:00 amSTL - PDX

1 stop9h 24mHawaiian Airlines

Wed 2/261:33 pmPDX - STL

1 stop8h 26mHawaiian Airlines

Deal found 2/19

$472

Wed 2/266:43 pmSTL - PDX

1 stop15h 57mFrontier

Tue 3/46:32 amPDX - STL

1 stop24h 44mFrontier

Deal found 2/19

$189

Wed 2/266:00 amSTL - PDX

1 stop8h 52mDelta

Wed 2/2612:59 amPDX - STL

1 stop8h 00mDelta

Deal found 2/19

$473

Wed 2/2611:20 amSTL - PDX

2 stops11h 45mUnited Airlines

Thu 2/277:05 amPDX - STL

1 stop6h 35mUnited Airlines

Deal found 2/19

$475

Wed 2/2612:15 pmSTL - PDX

3 stops23h 06mMultiple Airlines

Thu 2/278:28 pmPDX - STL

3 stops18h 17mMultiple Airlines

Deal found 2/19

$608

Wed 3/127:00 amSTL - PDX

1 stop7h 33mAlaska Airlines

Wed 3/123:00 pmPDX - STL

1 stop6h 59mAlaska Airlines

Deal found 2/19

$301

Wed 3/197:03 pmSTL - PDX

1 stop7h 34mMultiple Airlines

Wed 4/21:25 pmPDX - STL

1 stop8h 34mMultiple Airlines

Deal found 2/18

$194

Mon 3/245:37 pmSTL - PDX

1 stop7h 23mAmerican Airlines

Sat 3/2910:01 pmPDX - STL

1 stop8h 08mAmerican Airlines

Deal found 2/18

$333

Wed 3/267:40 amSTL - PDX

1 stop6h 43mDelta

Wed 4/25:40 amPDX - STL

1 stop5h 43mDelta

Deal found 2/19

$267

Wed 3/266:15 amSTL - PDX

1 stop8h 44mUnited Airlines

Wed 4/27:54 amPDX - STL

1 stop6h 58mUnited Airlines

Deal found 2/20

$318

Wed 3/264:15 pmSTL - PDX

2 stops9h 25mSouthwest

Wed 4/21:40 pmPDX - STL

1 stop6h 45mSouthwest

Deal found 2/19

$338

One-way flights from St. Louis to Portland
Search for one-way flight options from St. Louis to Portland. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Wed 3/197:03 pmSTL - PDX

1 stop7h 34mFrontier

Deal found 2/19

$60

Tue 4/293:29 pmSTL - PDX

1 stop9h 33mAmerican Airlines

Deal found 2/20

$114

Thu 4/176:44 amSTL - PDX

1 stop7h 41mAlaska Airlines

Deal found 2/19

$134

Tue 4/223:12 pmSTL - PDX

1 stop7h 27mDelta

Deal found 2/19

$140

Mon 4/215:54 pmSTL - PDX

1 stop8h 36mUnited Airlines

Deal found 2/19

$159

Sat 4/198:30 amSTL - PDX

2 stops9h 35mSouthwest

Deal found 2/19

$214

Sun 3/95:15 pmSTL - PDX

3 stops27h 22mMultiple Airlines

Deal found 2/19

$245

Find flights from St. Louis to Portland within your budget

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 5/8

4:07 pm-12:38 am

1 stop10h 31m

Portland

Sun 5/11

6:20 am-9:09 am

1 stop24h 49m

$140

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/19

7:03 pm-12:37 am

1 stop7h 34m

Portland

Wed 4/2

1:25 pm-11:59 pm

1 stop8h 34m

$194

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 4/3

2:20 pm-6:07 pm

1 stop5h 47m

Portland

Tue 4/8

5:40 am-1:19 pm

1 stop5h 39m

$227

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 4/1

5:54 pm-12:30 am

1 stop8h 36m

Portland

Mon 4/7

11:30 pm-9:58 am

1 stop8h 28m

$228

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 4/16

6:44 am-10:52 am

1 stop6h 08m

Portland

Wed 4/16

1:25 pm-11:59 pm

1 stop8h 34m

$241

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 5/7

5:00 am-10:33 am

1 stop7h 33m

Portland

Thu 8/14

11:59 pm-8:55 am

1 stop6h 56m

$293

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/26

4:15 pm-11:40 pm

2 stops9h 25m

Portland

Wed 4/2

1:40 pm-10:25 pm

1 stop6h 45m

$338

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/19

7:03 pm-12:37 am

1 stop7h 34m

$60

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 4/29

3:29 pm-11:02 pm

1 stop9h 33m

$114

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 4/17

6:44 am-12:25 pm

1 stop7h 41m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 14 results

Compare providers for flights from St. Louis to Portland

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Portland in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 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 St. Louis-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Portland flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Portland 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 St. Louis-Portland 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 St. Louis to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from St. Louis 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 St. Louis to Portland

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

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

Booking 89 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.

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to Portland (average of $277). Flying from St. Louis to Portland in March is currently the most expensive (average of $376). 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 STL to 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 morning, which can drop the price by up to 10% versus a flight at noon.

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

Travelers seeking maximum savings on their St. Louis to Portland flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Portland by month

In terms of precipitation, rainfall in Portland ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Portland when rainfall is around 0.7 in.

Temperature in Portland by month

If weather is an important factor for your trip to Portland, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Portland

Read through reviews of airlines operating flights from St. Louis to Portland, such as Southwest, 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

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest

8.1

Very good

4,411 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Alaska Airlines

8.0

Very good

9,692 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Delta

8.0

Very good

8,220 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

United Airlines

7.4

Good

8,766 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Related info for your journey

How popular is this St. Louis to Portland flight route?
Within the past month, 1 users have taken a look at flights from Lambert-St Louis to Portland.
What are the cheapest airlines flying from St. Louis to Portland round-trip?
Currently priced at $140, 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. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $227 and $228, respectively. These flights start at 61% 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 $60. American Airlines flights start at $114 while deals on Alaska Airlines start at $134 one-way.
Where are the most common layover locations when flying from St. Louis to Portland?
St. Louis to Portland 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?
Salt Lake City travelers tend to visit Temple Square, Abravanel Hall, and Salt Lake Temple more than anywhere else. Temple Square, Abravanel Hall, and Salt Lake Temple can be accessed by traveling approximately 4.7 mi, 4.7 mi, and 4.8 mi, respectively from Salt Lake City. Those looking to explore during their layover in Salt Lake City can rent a car from Salt Lake City for about $53 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 Denver least frequently.
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.
What is the cheapest month to book a flight from St. Louis to Portland?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Portland (average of $277). Flying from St. Louis to Portland in March is currently the most expensive (average of $376). 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.

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Other flights to Portland

Top 7 airlines flying from St. Louis to Portland

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$94	Average$180	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$100	Average$191	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$177	Average$389	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$215	Average$362	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$216	Average$380	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$251	Average$427	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$286	Average$486	FlexibilityNo cancel fee	On-time63%

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$60+ Cheap flights from St. Louis to Portland (STL - PDX)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Portland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from Lambert-St Louis to Portland are usually found in September or November, booked 89 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from St. Louis to Portland

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Portland

Cheapest flights from St. Louis to PortlandExplore the most affordable flight options available from St. Louis to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from St. Louis to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from St. Louis to Portland within your budget

Compare providers for flights from St. Louis to Portland

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 St. Louis to Portland in February.

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

Have a flexible travel schedule? Discover the best time to fly to Portland from St. Louis with our price prediction graph.

Travel insights for flights from St. Louis to Portland

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

How far ahead should I 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 February 14, 2025.

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

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

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 February 20, 2025.

What is the cheapest day 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 December 16, 2024.

Rainfall in Portland by month

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

Temperature in Portland by month

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

Reviews of airlines servicing Portland

Read through reviews of airlines operating flights from St. Louis to Portland, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

How popular is this St. Louis to Portland flight route?

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

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

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

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

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

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Portland

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Cheapest flights from St. Louis to Portland
Explore the most affordable flight options available from St. Louis to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.