Cheap flights from St. Louis to Portland (STL - PDX) from $56
This is the cheapest one-way flight price, found on 9/20. Prices may vary by date and flight preferences.
The best prices from Lambert-St Louis to Portland are usually found in January or February, booked 26 days in advance, depart on a Tuesday or Friday and return on a Sunday
How to find the cheapest flight from St. Louis (STL) to Portland (PDX)
All the information you need to plan the best STL to PDX flight in 2023: compare St. Louis to Portland flight prices with the expected peak season, weather and rainfall in Portland.
Popular in | July |
|---|---|
Cheapest in | January |
Round-trip from | $278 |
One-way from | $113 |
STL - PDX Price | $278 - $500 |
|---|---|
PDX Temperature | 41 - 69.8 °F |
PDX Rainfall | 0.7 - 5.6 inches |
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 27 days before your planned departure. Booking around this time can save you about 14% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $459 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $476.
What is the cheapest month to fly from St. Louis to Portland?
The best pricing can be found in the month of January. Prices to Portland from St. Louis average $437. You can even find prices in January for less than $437, as users have found deals to Portland from as low as $193. The month of July 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 61%.
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 afternoon, which can drop the price by up to 25% versus a flight in the evening.
Cheap Frontier flights from St. Louis to Portland
Peruse some of the lowest-priced Frontier flights we've found from St. Louis to Portland. Make sure to check back often as deals are often changing.
Cheap United Airlines flights from St. Louis to Portland
Some of the lowest-priced United Airlines flights we've found at this time heading from St. Louis to Portland. Deals are refreshing constantly so come back soon for more options.
Cheap St. Louis to Portland flights in September & October 2023
The best prices found for STL to PDX flights for September, October
Scroll through some of the best deals on flights from St. Louis to Portland in 2023. Check back regularly for other flight deals.
St. Louis to Portland 2023 flight deals
Cheap flights to Portland from St. Louis found for this year
Scroll through some of the best deals on flights from St. Louis to Portland in 2023. Check back regularly for other flight deals.
St. Louis to Portland flights leaving soon
Late deals on return flights to Portland from St. Louis, departing today and this week
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.
One-way flights to Portland from St. Louis
The cheapest one-way flights from St. Louis to Portland
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.
Find flights from St. Louis to Portland within your budget
Use the slider to find flights from St. Louis to Portland that fit your budget.
Fly from
Fly to
Budget
$160 - $329
Route
Depart
Return
Price
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Mon 10/9
2 stops10h 24m
Portland
Sat 10/14
1 stop6h 58m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Thu 10/12
1 stop18h 26m
Portland
Fri 10/13
1 stop7h 14m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 10/10
1 stop11h 11m
Portland
Thu 10/12
1 stop7h 15m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Fri 10/6
1 stop10h 48m
Portland
Sat 10/14
1 stop6h 58m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 10/7
2 stops20h 11m
Portland
Sat 10/14
1 stop6h 58m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 10/3
2 stops21h 22m
Portland
Thu 10/12
1 stop7h 15m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 10/17
2 stops20h 31m
Portland
Tue 10/24
3 stops31h 33m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 10/17
1 stop7h 27m
Portland
Mon 10/23
1 stop7h 30m
Lambert-St LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 11/14
1 stop7h 24m
Portland
Tue 11/14
1 stop5h 59m
Reviews of airlines servicing Portland
Read through reviews of airlines operating flights from St. Louis to Portland, such as Frontier, United Airlines and Spirit Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Flight departed on time and landed a little early. Friendly staff, and they did two passes with drinks and complimentary snacks.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Flight departed on time and landed a little early. Friendly staff, and they did two passes with drinks and complimentary snacks.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Flight departed on time and landed a little early. Friendly staff, and they did two passes with drinks and complimentary snacks.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Flight departed on time and landed a little early. Friendly staff, and they did two passes with drinks and complimentary snacks.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Flight departed on time and landed a little early. Friendly staff, and they did two passes with drinks and complimentary snacks.
Comfort
Food
Crew
Entertainment
Boarding
Overall
Reviews
Flight departed on time and landed a little early. Friendly staff, and they did two passes with drinks and complimentary snacks.
Related info for your journey
Useful info, stats and facts about St. Louis to Portland flights.
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 Multiple Airlines for just $160, but on average you can expect to pay $173.
Are there last-minute flights available from St. Louis to Portland for under $200?
There are currently 8+ open flights from St. Louis to Portland within the next 7 days for less than $200.
How popular is this St. Louis to Portland flight route?
Within the past month, 11 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 $161, 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 $194. These flights start at 63% 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 $56. Spirit Airlines flights start at $103 while deals on Delta start at $167 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.
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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.
Top 6 airlines flying from St. Louis to Portland
The chart below displays the airlines Cheapflights users traveling from St. Louis to Portland choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Hourly flight availability from St. Louis to Portland
See what time of day planes typically take off from St. Louis to Portland
| 50%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 25%of flight departures | Morning6 am to noon |
| 25%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Weekly flight availability from St. Louis to Portland
See how many times per day planes take to the skies headed from St. Louis to Portland
| Sunday | 1daily flight |
|---|---|
| Monday | 0daily flights |
| Tuesday | 0daily flights |
| Wednesday | 0daily flights |
| Thursday | 0daily flights |
| Friday | 0daily flights |
| Saturday | 0daily flights |