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$107+ Cheap flights from Portland, ME to Baltimore (PWM - BWI)

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BWI
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Baltimore/Washington are usually found in March or January, booked 52 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Portland to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Baltimore (BWI). 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 August 20, 2025.

Round-trip from

$217
(Southwest)

One-way from

$107
(FlightHub)

Popular in

July

Cheapest in

March

Average price

$429
From Portland to Baltimore/Washington
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One-way flight from Portland to Baltimore/Washington
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Highest demand for flights based on searches. 10% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Portland to Baltimore

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

This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/103:40 pmPWM - BWI
Nonstop1h 40mSouthwest
Wed 9/108:50 pmBWI - PWM
Nonstop1h 35mSouthwest
Deal found 8/18$217
This Southwest deal was found by Cheapflights users on 8/19. 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.
Sat 9/275:45 amPWM - BWI
Nonstop1h 35mSouthwest
Tue 9/308:15 amBWI - PWM
Nonstop1h 35mSouthwest
Deal found 8/19$225
This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:45 amPWM - BWI
Nonstop1h 35mSouthwest
Mon 9/228:15 amBWI - PWM
Nonstop1h 35mSouthwest
Deal found 8/18$233
This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:50 amPWM - BWI
Nonstop1h 35mSouthwest
Thu 9/118:15 amBWI - PWM
Nonstop1h 35mSouthwest
Deal found 8/18$235
This Delta deal was found by Cheapflights users on 8/17. 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.
Wed 10/224:48 pmPWM - BWI
1 stop6h 14mDelta
Sat 10/255:39 pmBWI - PWM
2 stops6h 26mDelta
Deal found 8/17$240
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:05 pmPWM - BWI
1 stop6h 36mAmerican Airlines
Mon 9/296:14 amBWI - PWM
1 stop6h 53mAmerican Airlines
Deal found 8/19$243
This Southwest deal was found by Cheapflights users on 8/19. 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.
Fri 10/245:45 amPWM - BWI
Nonstop1h 35mSouthwest
Sun 10/2610:55 pmBWI - PWM
Nonstop1h 30mSouthwest
Deal found 8/19$253
This American Airlines deal was found by Cheapflights users on 8/20. 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.
Fri 9/195:10 pmPWM - BWI
1 stop5h 52mAmerican Airlines
Mon 9/222:46 pmBWI - PWM
1 stop7h 43mAmerican Airlines
Deal found 8/20$258
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:10 pmPWM - BWI
1 stop5h 58mAmerican Airlines
Tue 9/306:16 amBWI - PWM
1 stop6h 51mAmerican Airlines
Deal found 8/19$268
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:57 pmPWM - BWI
1 stop5h 23mAmerican Airlines
Sun 10/56:52 pmBWI - PWM
1 stop4h 45mAmerican Airlines
Deal found 8/18$273
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2912:29 pmPWM - BWI
1 stop9h 16mMultiple Airlines
Sun 8/3111:08 amBWI - PWM
1 stop9h 04mMultiple Airlines
Deal found 8/18$281

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Baltimore 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 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Portland to Baltimore that are best for you.

Fly from

Portland

Fly to

Baltimore

Route

Depart

Return

Price

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 9/10

3:40 pm-5:20 pm

Nonstop1h 40m

Baltimore/Washington

Wed 9/10

8:50 pm-10:25 pm

Nonstop1h 35m

$217

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Mon 10/27

5:15 pm-6:50 pm

Nonstop1h 35m

Baltimore/Washington

Tue 10/28

9:45 am-11:15 am

Nonstop1h 30m

$225

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 10/22

5:45 am-7:20 am

Nonstop1h 35m

Baltimore/Washington

Sat 10/25

11:00 am-12:35 pm

Nonstop1h 35m

$225

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 9/27

5:45 am-7:20 am

Nonstop1h 35m

Baltimore/Washington

Tue 9/30

8:15 am-9:50 am

Nonstop1h 35m

$225

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 10/25

3:20 pm-4:55 pm

Nonstop1h 35m

Baltimore/Washington

Mon 10/27

10:35 pm-12:05 am

Nonstop1h 30m

$233

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 9/20

5:45 am-7:20 am

Nonstop1h 35m

Baltimore/Washington

Mon 9/22

8:15 am-9:50 am

Nonstop1h 35m

$233

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 11/8

3:15 pm-5:10 pm

Nonstop1h 55m

Baltimore/Washington

Tue 11/11

8:45 pm-10:15 pm

Nonstop1h 30m

$233

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Mon 10/27

5:59 pm-12:33 am

1 stop6h 34m

Baltimore/Washington

Tue 10/28

9:30 am-2:38 pm

1 stop5h 08m

$235

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 2/4

5:45 am-7:40 am

Nonstop1h 55m

Baltimore/Washington

Sun 2/8

1:25 pm-2:55 pm

Nonstop1h 30m

$235

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 9/10

5:50 am-7:25 am

Nonstop1h 35m

Baltimore/Washington

Thu 9/11

8:15 am-9:50 am

Nonstop1h 35m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 15 results
1
2

Best time to book a flight from Portland to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore 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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Baltimore

How far ahead should I book a flight from Portland, Maine to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Baltimore. Price data was last updated on August 8, 2025.

The price you pay for your flight from Portland, Maine to Baltimore may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland, Maine to Baltimore?

Currently, August is the cheapest month in which you can book a flight from Portland, Maine to Baltimore (average of $241). Flying from Portland, Maine to Baltimore in March is currently the most expensive (average of $290). 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 PWM to BWI?

Find hourly flight availability from Portland to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

One of the essential ways to save on airfare from Portland, Maine to Baltimore is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 6% on airfare.

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated August 20, 2025.
Read reviews from past customers who have flown Southwest and United Airlines from Portland to Baltimore. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,928 reviews
Southwest
8.0
Very good
4,246 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • What airports do I use to fly from Portland to Baltimore?

    Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Portland. Booking flights from Portland (PWM) to Baltimore/Washington (BWI) should be relatively easy as there are 2 daily flights to Baltimore from 2 different airlines. 1h 35m is how long a flight from Portland to Baltimore/Washington will take if you book a nonstop flight.

  • How popular is this Portland, Maine to Baltimore flight route?

    The Portland to Baltimore/Washington flight path was viewed by 43 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Portland, Maine to Baltimore?

    For as low as $217, Southwest can have you in Baltimore from Portland, Maine in 1h 40m. The distance between Portland, Maine and Baltimore is about 451 mi. Generally, flights for this route are nonstop.

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

    United Airlines, at $203, was found to be the cheapest airline from Portland, Maine to Baltimore. An alternate airline flying to your destination would be Southwest. United Airlines is priced at 45% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Portland, Maine to Baltimore?

    Looking at all options, your cheapest flight can be booked for $108. While the most popular route (Portland - Baltimore/Washington) can be booked for $225 on average our data indicates $338 when flying from Portland, Maine to Baltimore.

  • Can I find deals for flights from Portland to Baltimore that include hotel bookings?

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

  • How can I find direct flights from Portland to Baltimore?

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

  • Can I find deals for business class flights from Portland to Baltimore?

    Yes. Cheapflights offers flight deals from Portland to Baltimore 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, Maine to Baltimore?

    Currently, August is the cheapest month in which you can book a flight from Portland, Maine to Baltimore (average of $241). Flying from Portland, Maine to Baltimore in March is currently the most expensive (average of $290). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Portland to Baltimore

Discover the top 2 airlines that operate flights from Portland to Baltimore. 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 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$203Average$378FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$245Average$355FlexibilityNo cancel feeOn-time63%

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