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$109+ Cheap flights from Baltimore to Portland, ME (BWI - PWM)

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — PWM
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find cheap flights from Baltimore to Portland with Cheapflights

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.

3. Compare prices and book

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Cheapflights Tip: The best prices from Baltimore/Washington to Portland are usually found in January or April, booked 55 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Baltimore to Portland

Cheapest flights from Baltimore to Portland
Explore the most affordable flight options available from Baltimore to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.

This Southwest deal was found by Cheapflights users on 7/22. 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.
Mon 8/248:10 am
BWI
-
PWM
Nonstop1h 40m
Southwest
Thu 8/2710:30 am
PWM
-
BWI
Nonstop1h 40m
Southwest
Deal found 7/22$217
This Southwest deal was found by Cheapflights users on 7/24. 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.
Tue 9/88:15 am
BWI
-
PWM
Nonstop1h 40m
Southwest
Fri 9/1110:30 am
PWM
-
BWI
Nonstop1h 40m
Southwest
Deal found 7/24$222
This Delta deal was found by Cheapflights users on 7/26. 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 8/185:00 pm
BWI
-
PWM
1 stop6h 13m
Delta
Wed 8/262:14 pm
PWM
-
BWI
1 stop7h 13m
Delta
Deal found 7/26$227
This Southwest deal was found by Cheapflights users on 7/23. 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 10/38:40 pm
BWI
-
PWM
Nonstop1h 30m
Southwest
Tue 10/65:40 am
PWM
-
BWI
Nonstop1h 45m
Southwest
Deal found 7/23$228
This Delta deal was found by Cheapflights users on 7/24. 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 8/2512:30 pm
BWI
-
PWM
2 stops12h 29m
Delta
Thu 8/2711:50 am
PWM
-
BWI
1 stop6h 32m
Delta
Deal found 7/24$232
This Southwest deal was found by Cheapflights users on 7/24. 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 8/157:30 pm
BWI
-
PWM
Nonstop1h 30m
Southwest
Wed 8/195:45 am
PWM
-
BWI
Nonstop1h 40m
Southwest
Deal found 7/24$233
This Delta deal was found by Cheapflights users on 7/24. 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.
Sat 10/312:30 pm
BWI
-
PWM
2 stops8h 45m
Delta
Tue 10/66:28 am
PWM
-
BWI
2 stops10h 23m
Delta
Deal found 7/24$237
This Delta deal was found by Cheapflights users on 7/23. 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.
Sat 9/52:18 pm
BWI
-
PWM
1 stop7h 13m
Delta
Sun 9/66:05 am
PWM
-
BWI
1 stop7h 00m
Delta
Deal found 7/23$238
This Delta deal was found by Cheapflights users on 7/26. 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 8/185:00 pm
BWI
-
PWM
1 stop6h 13m
Delta
Tue 8/256:05 am
PWM
-
BWI
1 stop7h 00m
Delta
Deal found 7/26$263
This Southwest deal was found by Cheapflights users on 7/26. 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 9/97:40 pm
BWI
-
PWM
Nonstop1h 35m
Southwest
Tue 9/155:45 am
PWM
-
BWI
Nonstop1h 40m
Southwest
Deal found 7/26$264

Find flight deals from Baltimore to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Portland (PWM). 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 July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Southwest)

One-way from

$109
(Southwest)

Popular in

November

Cheapest in

January

Average price

$480
Provider with most accurate pricing for Baltimore/Washington-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-Portland flights.
Search Deals
From Baltimore/Washington to Portland
Search Deals
One-way flight from Baltimore/Washington to Portland
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to Portland 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 July 27, 2026.
Use the filters below to find and compare flights from Baltimore to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Mon 8/17

8:55 pm-10:25 pm

Nonstop1h 30m

Portland

Thu 8/20

5:55 am-7:30 am

Nonstop1h 35m

$217

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Wed 8/19

6:15 am-12:02 pm

1 stop5h 47m

Portland

Wed 8/26

11:50 am-6:22 pm

1 stop6h 32m

$227

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Mon 8/31

8:55 pm-10:25 pm

Nonstop1h 30m

Portland

Fri 9/4

1:05 pm-2:45 pm

Nonstop1h 40m

$304

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Sun 8/16

11:10 am-12:45 pm

Nonstop1h 35m

Portland

Wed 8/19

5:45 am-7:25 am

Nonstop1h 40m

$315

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Tue 10/13

9:46 am-4:02 pm

1 stop6h 16m

Portland

Mon 10/19

1:52 pm-11:04 pm

2 stops9h 12m

$388

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Sun 8/16

6:15 am-12:02 pm

1 stop5h 47m

Portland

Wed 8/19

11:50 am-6:22 pm

1 stop6h 32m

$391

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Fri 8/28

8:55 pm-10:25 pm

Nonstop1h 30m

Portland

Mon 8/31

5:55 am-7:30 am

Nonstop1h 35m

$391

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Sun 8/23

6:15 am-12:02 pm

1 stop5h 47m

Portland

Wed 9/2

6:30 am-4:49 pm

2 stops10h 19m

$398

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Fri 9/25

8:55 pm-10:30 pm

Nonstop1h 35m

Portland

Sun 9/27

6:10 am-7:45 am

Nonstop1h 35m

$398

BaltimorePortland

BWI - PWM

BWIPWM

Baltimore/Washington

Mon 8/17

12:30 pm-11:30 pm

2 stops11h 00m

Portland

Thu 8/20

11:50 am-6:22 pm

1 stop6h 32m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Baltimore 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 Baltimore to Portland in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

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

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

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

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to Portland, Maine. 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 Baltimore to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from Baltimore to Portland, Maine (average of $293). Flying from Baltimore to Portland, Maine in November is currently the most expensive (average of $649). 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 BWI to PWM?

Find hourly flight availability from Baltimore 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 July 27, 2026.

A simple way to save on the total cost of your ticket is to fly from Baltimore to Portland, Maine in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Baltimore to Portland, Maine?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to Portland. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their Baltimore to Portland, Maine flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Baltimore to Portland, Maine?

Airfare is below average for this route at the moment.

Baltimore to Portland, Maine flights typically cost between $339 and $471 in August.
The cheapest round-trip price found within the last 5 days was $217 on Southwest (Aug 24-Aug 27).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated July 27, 2026.
Read through reviews of airlines operating flights from Baltimore to Portland, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,229 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2023

BWI - SAN

I am a diabetic so Southwest’s snacks are always a challenge for me. Nuts would be a great option. Thanks
Southwest
8.0
Very good
4,229 reviews
Southwest
8.0
Very good
4,229 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2023

BWI - SAN

I am a diabetic so Southwest’s snacks are always a challenge for me. Nuts would be a great option. Thanks

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Portland. 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 Baltimore to Portland?

    If you book a flight from Baltimore to Portland, you will be flying from Baltimore/Washington to Portland. Flights to Portland (PWM) from Baltimore/Washington (BWI) take 1h 30m for a nonstop flight. There are 3 flights from Baltimore/Washington to Portland per day from 1 airline.

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

    Within the past month, 1 users have taken a look at flights from Baltimore/Washington to Portland.

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

    Departing from Baltimore to Portland, Maine will take you 1h 30m. There are 451 mi between Baltimore and Portland, Maine. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Baltimore to Portland, Maine round-trip?

    Flying on Southwest is currently your cheapest option to Portland, Maine, with prices starting at $260. You may be able to fly from Baltimore to Portland, Maine for 40% less than the average price by searching for this airline.

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

    While on average a flight from Baltimore to Portland, Maine is generally $359, our data shows the cheapest flight currently is $126. When looking at the most popular route, (Baltimore/Washington - Portland), you can expect to pay $217 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Baltimore to Portland, Maine (average of $293). Flying from Baltimore to Portland, Maine in November is currently the most expensive (average of $649). 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

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Lewiston
Brunswick
Conway

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Baltimore to Portland

Discover the top airline that operate flights from Baltimore to Portland. 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 July 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$259Average$411FlexibilityNo cancel feeOn-time63%

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