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Cheap flights from Portland to St. Louis (PWM - STL) from $173

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 7/14. 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.
PWM — STL
mai 15 — mai 221
From?
To?
mer. 5/15
mer. 5/22
1 adult, Economy
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The best prices from Portland to Lambert-St Louis are usually found in January or November, booked 47 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Portland to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 mai 10, 2024.

Popular in

April

Cheapest in

January

Round-trip from

$322

One-way from

$302
High demand for flights, 26% potential price rise
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Best time to find cheap flights, 17% 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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What is the cheapest day to fly round-trip from Portland, Maine to St. Louis?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 56% when planning your travel around this day of the week.

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

To save up to 158% on this flight, we recommend booking at least 48 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Portland, Maine to St. Louis from $625 1-2 weeks out and tickets from $625 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in April. For low rates, January can be a great choice for travel to St. Louis. Flights to St. Louis from Portland, Maine in January are about $521 on average during January, but can be found for as low as $254.

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

When flying from Portland, Maine to St. Louis, 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 11% versus a flight in the afternoon.

Cheap Delta flights from Portland to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Portland and St. Louis. 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 2,717,708 searches. Data last updated mai 10, 2024.
Check out some of the cheapest Delta flights we've come across from Portland to St. Louis. Come back soon if you're not finding the exact deal you're looking for.
mer. 8/215:40 amPWM - STL
1 stop4h 50mDelta
sam. 8/245:30 pmSTL - PWM
1 stop4h 36mDelta
Deal found 5/9$286
jeu. 6/136:15 amPWM - STL
1 stop6h 46mDelta
mer. 6/193:10 pmSTL - PWM
1 stop6h 50mDelta
Deal found 5/9$326
mer. 8/216:30 amPWM - STL
2 stops10h 27mDelta
sam. 8/245:30 pmSTL - PWM
1 stop4h 36mDelta
Deal found 5/8$446
mer. 8/216:30 amPWM - STL
2 stops10h 27mDelta
sam. 8/245:30 pmSTL - PWM
1 stop4h 36mDelta
Deal found 5/9$451
dim. 6/25:00 amPWM - STL
1 stop5h 19mDelta
ven. 6/74:02 pmSTL - PWM
1 stop4h 56mDelta
Deal found 5/9$476
jeu. 5/306:27 amPWM - STL
1 stop6h 49mDelta
dim. 6/22:59 pmSTL - PWM
1 stop6h 51mDelta
Deal found 5/9$542
mar. 5/215:00 amPWM - STL
1 stop5h 19mDelta
mar. 5/282:59 pmSTL - PWM
1 stop6h 51mDelta
Deal found 5/9$565
mer. 5/292:35 pmPWM - STL
1 stop7h 15mDelta
dim. 6/26:12 pmSTL - PWM
1 stop4h 32mDelta
Deal found 5/9$612
ven. 5/176:05 amPWM - STL
1 stop6h 43mDelta
lun. 5/206:12 pmSTL - PWM
1 stop4h 32mDelta
Deal found 5/9$695

Cheap American Airlines flights from Portland to St. Louis

Explore cheap flight options specifically provided by American Airlines for the route between Portland and St. Louis. 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 2,717,708 searches. Data last updated mai 10, 2024.
Some of the best deals we've found on American Airlines flights traveling from Portland to St. Louis. Check back soon if you're not seeing flights that suit your needs.
mar. 6/115:29 pmPWM - STL
1 stop4h 59mAmerican Airlines
ven. 6/145:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$324
ven. 6/77:42 amPWM - STL
1 stop7h 34mAmerican Airlines
mar. 6/115:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$333
jeu. 6/131:05 pmPWM - STL
1 stop7h 24mAmerican Airlines
dim. 6/165:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$363
mar. 5/287:45 amPWM - STL
1 stop6h 25mAmerican Airlines
sam. 6/85:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$393
jeu. 5/238:45 pmPWM - STL
1 stop5h 21mAmerican Airlines
dim. 5/265:04 amSTL - PWM
1 stop5h 43mAmerican Airlines
Deal found 5/9$423
dim. 7/147:14 amPWM - STL
1 stop7h 02mAmerican Airlines
sam. 7/203:18 pmSTL - PWM
1 stop7h 28mAmerican Airlines
Deal found 5/9$424
lun. 5/2012:21 pmPWM - STL
1 stop8h 09mAmerican Airlines
lun. 5/276:16 amSTL - PWM
1 stop6h 43mAmerican Airlines
Deal found 5/9$623
jeu. 6/136:01 amPWM - STL
2 stops8h 11mAmerican Airlines
lun. 6/175:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$646
jeu. 6/136:01 amPWM - STL
2 stops8h 11mAmerican Airlines
mer. 6/195:15 amSTL - PWM
1 stop5h 55mAmerican Airlines
Deal found 5/9$656

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

Find cheap flight options from Portland to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,717,708 searches. Prices were last updated on mai 10, 2024.
Check out some of the best flight deals from Portland to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
jeu. 6/131:57 pmPWM - STL
1 stop18h 10mFrontier
lun. 6/176:16 pmSTL - PWM
1 stop13h 50mFrontier
Deal found 5/9$249
mar. 6/115:29 pmPWM - STL
1 stop4h 59mAmerican Airlines
ven. 6/145:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$324
jeu. 6/136:15 amPWM - STL
1 stop6h 46mDelta
mer. 6/193:10 pmSTL - PWM
1 stop6h 50mDelta
Deal found 5/9$326
ven. 6/77:42 amPWM - STL
1 stop7h 34mAmerican Airlines
mar. 6/115:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$333
jeu. 6/131:05 pmPWM - STL
1 stop7h 24mAmerican Airlines
dim. 6/165:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$363
jeu. 6/131:33 pmPWM - STL
2 stops25h 43mMultiple Airlines
dim. 6/166:55 pmSTL - PWM
1 stop13h 14mMultiple Airlines
Deal found 5/9$372
jeu. 5/303:45 pmPWM - STL
2 stops24h 29mMultiple Airlines
dim. 6/27:30 pmSTL - PWM
3 stops22h 29mMultiple Airlines
Deal found 5/9$381
mar. 5/287:45 amPWM - STL
1 stop6h 25mAmerican Airlines
sam. 6/85:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$393
jeu. 5/303:45 pmPWM - STL
2 stops24h 29mMultiple Airlines
dim. 6/27:30 pmSTL - PWM
1 stop13h 39mMultiple Airlines
Deal found 5/9$399

Portland to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Portland and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,717,708 searches. Data last updated mai 10, 2024.
Check out some of the best flight deals from Portland to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
jeu. 6/131:57 pmPWM - STL
1 stop18h 10mFrontier
lun. 6/176:16 pmSTL - PWM
1 stop13h 50mFrontier
Deal found 5/9$249
mer. 8/215:40 amPWM - STL
1 stop4h 50mDelta
sam. 8/245:30 pmSTL - PWM
1 stop4h 36mDelta
Deal found 5/9$286
mar. 6/115:29 pmPWM - STL
1 stop4h 59mAmerican Airlines
ven. 6/145:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$324
jeu. 6/136:15 amPWM - STL
1 stop6h 46mDelta
mer. 6/193:10 pmSTL - PWM
1 stop6h 50mDelta
Deal found 5/9$326
ven. 6/77:42 amPWM - STL
1 stop7h 34mAmerican Airlines
mar. 6/115:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$333
jeu. 6/131:05 pmPWM - STL
1 stop7h 24mAmerican Airlines
dim. 6/165:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$363
jeu. 6/131:33 pmPWM - STL
2 stops25h 43mMultiple Airlines
dim. 6/166:55 pmSTL - PWM
1 stop13h 14mMultiple Airlines
Deal found 5/9$372
jeu. 5/303:45 pmPWM - STL
2 stops24h 29mMultiple Airlines
dim. 6/27:30 pmSTL - PWM
3 stops22h 29mMultiple Airlines
Deal found 5/9$381
mar. 5/287:45 amPWM - STL
1 stop6h 25mAmerican Airlines
sam. 6/85:38 pmSTL - PWM
1 stop6h 14mAmerican Airlines
Deal found 5/9$393

Portland to St. Louis flights leaving soon

Find last-minute flight options from Portland to St. Louis 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 2,717,708 searches. Data last updated mai 10, 2024.
Consider one of these great deals we found on last-minute flights from Portland to St. Louis. Tip: verify your flight details before completing your reservation.
lun. 5/2012:21 pmPWM - STL
1 stop8h 09mAmerican Airlines
lun. 5/276:16 amSTL - PWM
1 stop6h 43mAmerican Airlines
Deal found 5/9$623
ven. 5/176:05 amPWM - STL
1 stop6h 43mDelta
lun. 5/206:12 pmSTL - PWM
1 stop4h 32mDelta
Deal found 5/9$695
jeu. 5/165:00 amPWM - STL
1 stop5h 19mDelta
dim. 5/193:27 pmSTL - PWM
1 stop5h 32mDelta
Deal found 5/9$781
lun. 5/205:30 pmPWM - STL
1 stop4h 30mAmerican Airlines
lun. 5/275:55 amSTL - PWM
2 stops7h 04mAmerican Airlines
Deal found 5/9$792
ven. 5/175:30 pmPWM - STL
1 stop4h 30mAmerican Airlines
lun. 5/208:07 amSTL - PWM
2 stops13h 34mAmerican Airlines
Deal found 5/9$855
ven. 5/175:30 pmPWM - STL
2 stops23h 44mAmerican Airlines
lun. 5/208:07 amSTL - PWM
2 stops13h 34mAmerican Airlines
Deal found 5/9$960
jeu. 5/1612:21 pmPWM - STL
1 stop8h 09mAmerican Airlines
dim. 5/195:55 amSTL - PWM
2 stops16h 52mAmerican Airlines
Deal found 5/9$978
jeu. 5/166:00 amPWM - STL
2 stops10h 28mAmerican Airlines
dim. 5/196:40 amSTL - PWM
2 stops16h 07mAmerican Airlines
Deal found 5/9$1,125
lun. 5/2011:42 amPWM - STL
2 stops12h 58mDelta
lun. 5/272:18 pmSTL - PWM
2 stops7h 32mDelta
Deal found 5/9$1,713

One-way flights to St. Louis from Portland

Search for one-way flight options from Portland to St. Louis. 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 2,717,708 searches. Data last updated mai 10, 2024.
Take a look at some of the best available options we've come across on one-way flights from Portland to St. Louis. Those seeking round-trip flights from Portland to St. Louis should utilize the search form at the the top of the page.
dim. 7/145:37 amPWM - STL
1 stop4h 46mDelta
Deal found 5/8$173
dim. 7/141:27 pmPWM - STL
2 stops25h 50mMultiple Airlines
Deal found 5/8$239
sam. 5/1812:08 pmPWM - STL
3 stops25h 42mMultiple Airlines
Deal found 5/9$257
dim. 7/141:27 pmPWM - STL
3 stops23h 38mMultiple Airlines
Deal found 5/8$259
dim. 7/217:14 amPWM - STL
1 stop15h 40mAmerican Airlines
Deal found 5/9$272
dim. 7/75:37 amPWM - STL
1 stop4h 31mDelta
Deal found 5/9$273
dim. 7/211:27 pmPWM - STL
3 stops23h 38mMultiple Airlines
Deal found 5/9$282
dim. 7/71:27 pmPWM - STL
2 stops25h 24mMultiple Airlines
Deal found 5/9$299
dim. 7/71:27 pmPWM - STL
3 stops24h 33mMultiple Airlines
Deal found 5/9$302

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 2,717,708 searches. Data last updated mai 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$249 - $530

Route

Depart

Return

Price

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

jeu. 6/13

1 stop18h 10m

Lambert-St Louis

lun. 6/17

1 stop13h 50m

$249

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

mer. 8/21

1 stop4h 50m

Lambert-St Louis

sam. 8/24

1 stop4h 36m

$286

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

mar. 6/11

1 stop4h 59m

Lambert-St Louis

ven. 6/14

1 stop6h 14m

$324

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

jeu. 6/13

1 stop6h 46m

Lambert-St Louis

mer. 6/19

1 stop6h 50m

$326

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

ven. 6/7

1 stop7h 34m

Lambert-St Louis

mar. 6/11

1 stop6h 14m

$333

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

jeu. 6/13

1 stop7h 24m

Lambert-St Louis

dim. 6/16

1 stop6h 14m

$363

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

jeu. 6/13

2 stops25h 43m

Lambert-St Louis

dim. 6/16

1 stop13h 14m

$372

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

jeu. 5/30

2 stops24h 29m

Lambert-St Louis

dim. 6/2

3 stops22h 29m

$381

PortlandLambert-St Louis

PWM - STL

PWMSTL

Portland

ven. 6/7

2 stops11h 09m

Lambert-St Louis

mar. 6/11

1 stop6h 43m

$530

Flights are sorted by cheapest first

Deals found on 5/9

When is the best time to book a flight from Portland, Maine 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 May 3, 2024.
The price you pay for your flight from Portland, Maine to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 47 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 Portland, Maine 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 May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Portland, Maine to St. Louis flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Portland to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Portland to St. Louis is currently $262 while a round-trip flight costs $352. Price data was last updated on May 5, 2024.

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to St. Louis (average of $322). Flying from Portland, Maine to St. Louis in July is currently the most expensive (average of $372). 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

$326

February

$331

March

$357

April

$337

May

$342

June

$369

July

$372

August

$336

September

$322

October

$324

November

$336

December

$326

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °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 mai 10, 2024.
Peruse reviews from past customers who have flown with Delta, American Airlines and United Airlines from Portland to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,778 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,778 reviews
Delta
8.0
Very good
10,778 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

United Airlines
7.4
Good
11,027 reviews
Delta
8.0
Very good
10,778 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

American Airlines
7.3
Good
14,665 reviews
Delta
8.0
Very good
10,778 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Frontier
6.3
Okay
4,088 reviews
Delta
8.0
Very good
10,778 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

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.

  • Can I find flights from Portland, Maine to St. Louis for under $300 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to St. Louis for under $300. The cheapest flight booked recently is on Frontier for just $249, but on average you can expect to pay $393.

  • Are there last-minute flights available from Portland, Maine to St. Louis for under $700?

    There are currently 9+ open flights from Portland, Maine to St. Louis within the next 7 days for less than $700.

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

    Flying on Frontier is currently your cheapest option to St. Louis, with prices starting at $249. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $286 and $324, respectively. Frontier is 52% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $173. Users have also found prices from $272 and $482 on American Airlines and United Airlines, respectively.

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

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

  • What does PWM to STL mean?

    PWM stands for Portland Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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

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

    Yes, Cheapflights allows you to browse and filter Portland to St. Louis 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 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.

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

    Many airlines flying from Portland to St. Louis 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 Portland to St. Louis?

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

    The Portland, Maine to St. Louis flight deals you see on this page were last updated on 5/9.

See more FAQs

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

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Top 4 airlines flying from Portland to St. Louis

Discover the top 4 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 2,717,708 searches. Data last updated mai 10, 2024.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$242Average$474FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapest$338Average$540FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$347Average$484FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$357Average$501FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Find flights from Portland to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portland to St. Louis. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Portland to St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portland to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis from Portland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Portland to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Portland to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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