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$109+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BWI
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
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Find cheap flights from Portland to Baltimore with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to Baltimore/Washington are usually found in November or January, booked 44 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 4, 2026.

This Southwest deal was found by Cheapflights users on 8/4. 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 9/55:40 am
PWM
-
BWI
Nonstop1h 35m
Southwest
Sun 9/63:05 pm
BWI
-
PWM
Nonstop1h 30m
Southwest
Deal found 8/4$217
This Delta deal was found by Cheapflights users on 7/30. 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 10/274:47 pm
PWM
-
BWI
1 stop6h 17m
Delta
Wed 10/286:10 am
BWI
-
PWM
1 stop5h 47m
Delta
Deal found 7/30$227
This Southwest deal was found by Cheapflights users on 8/3. 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 9/57:25 am
PWM
-
BWI
Nonstop1h 35m
Southwest
Mon 9/71:30 pm
BWI
-
PWM
Nonstop1h 30m
Southwest
Deal found 8/3$233
This Delta deal was found by Cheapflights users on 8/3. 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 10/284:47 pm
PWM
-
BWI
1 stop6h 17m
Delta
Fri 10/309:46 am
BWI
-
PWM
1 stop6h 16m
Delta
Deal found 8/3$248
This Southwest deal was found by Cheapflights users on 8/4. 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.
Thu 9/245:55 am
PWM
-
BWI
Nonstop1h 35m
Southwest
Tue 9/298:15 am
BWI
-
PWM
Nonstop1h 40m
Southwest
Deal found 8/4$249
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 8/2711:50 am
PWM
-
BWI
1 stop6h 32m
Delta
Mon 8/316:15 am
BWI
-
PWM
1 stop5h 47m
Delta
Deal found 7/31$259
This Southwest deal was found by Cheapflights users on 7/30. 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 10/284:05 pm
PWM
-
BWI
Nonstop1h 35m
Southwest
Fri 10/308:20 am
BWI
-
PWM
Nonstop1h 30m
Southwest
Deal found 7/30$264
This Delta deal was found by Cheapflights users on 7/31. 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 9/231:59 pm
PWM
-
BWI
2 stops7h 31m
Delta
Wed 9/3012:30 pm
BWI
-
PWM
2 stops10h 47m
Delta
Deal found 7/31$269

Find 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 4, 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

March

Cheapest in

November

Average price

$359
Provider with most accurate pricing for Portland-Baltimore/Washington flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Baltimore/Washington flights.
Search Deals
From Portland to Baltimore/Washington
Search Deals
One-way flight from Portland to Baltimore/Washington
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 4, 2026.
Use the filters below to find and compare flights from Portland to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Tue 10/27

4:05 pm-5:40 pm

Nonstop1h 35m

Baltimore/Washington

Wed 10/28

10:50 am-12:20 pm

Nonstop1h 30m

$217

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 10/28

4:05 pm-5:40 pm

Nonstop1h 35m

Baltimore/Washington

Fri 10/30

8:20 am-9:50 am

Nonstop1h 30m

$233

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Tue 9/1

5:45 am-7:25 am

Nonstop1h 40m

Baltimore/Washington

Tue 9/8

3:45 pm-5:15 pm

Nonstop1h 30m

$249

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 10/28

4:47 pm-11:04 pm

1 stop6h 17m

Baltimore/Washington

Sat 10/31

6:10 am-12:22 pm

1 stop6h 12m

$259

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 8/28

5:55 am-7:30 am

Nonstop1h 35m

Baltimore/Washington

Mon 8/31

8:10 am-9:50 am

Nonstop1h 40m

$280

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 9/25

7:00 am-9:25 am

2 stops26h 25m

Baltimore/Washington

Tue 9/29

9:27 am-9:08 am

1 stop23h 41m

$324

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 9/4

4:47 pm-11:13 pm

1 stop6h 26m

Baltimore/Washington

Mon 9/7

6:15 am-12:02 pm

1 stop5h 47m

$325

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 9/11

10:30 am-12:10 pm

Nonstop1h 40m

Baltimore/Washington

Sun 9/13

9:25 pm-11:00 pm

Nonstop1h 35m

$351

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 8/21

1:12 pm-11:13 pm

2 stops10h 01m

Baltimore/Washington

Sat 8/22

5:36 pm-12:59 am

2 stops7h 23m

$454

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Mon 9/21

5:55 am-7:30 am

Nonstop1h 35m

Baltimore/Washington

Thu 9/24

8:55 pm-10:30 pm

Nonstop1h 35m

$471

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Portland to Baltimore

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 Portland to Baltimore in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust Score*3 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 Portland, Maine-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Baltimore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Baltimore 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 Portland, Maine-Baltimore 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 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?

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 43 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, November is the cheapest month in which you can book a flight from Portland, Maine to Baltimore (average of $331). Flying from Portland, Maine to Baltimore in March is currently the most expensive (average of $529). 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 4, 2026.

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 evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 35% on airfare.

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

Airfare is below average for this route at the moment.

Portland, Maine to Baltimore flights typically cost between $313 and $402 in September.
The cheapest round-trip price found within the last 5 days was $217 on Southwest (Sep 5-Sep 6).

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 4, 2026.
Read reviews from past customers who have flown Southwest 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
4,222 reviews

Overall

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Joseph,Sep 2023

LAX - BWI

The plane departure and arrival were on time. The crew was entertaining and professional at the same time. Baggage claim was efficient. Glad I flew on Southwest airlines.
Southwest
8.0
Very good
4,222 reviews
Southwest
8.0
Very good
4,222 reviews

Overall

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Joseph,Sep 2023

LAX - BWI

The plane departure and arrival were on time. The crew was entertaining and professional at the same time. Baggage claim was efficient. Glad I flew on Southwest airlines.

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 is 1 daily flight to Baltimore from 1 airline. 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 45 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 35m. The distance between Portland, Maine and Baltimore is about 451 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Southwest, at $271, was found to be the cheapest airline from Portland, Maine to Baltimore.. Southwest is priced at 29% 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 $138. While the most popular route (Portland - Baltimore/Washington) can be booked for $217 on average, our data indicates $382 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, November is the cheapest month in which you can book a flight from Portland, Maine to Baltimore (average of $331). Flying from Portland, Maine to Baltimore in March is currently the most expensive (average of $529). 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 airline flying from Portland to Baltimore

Discover the top airline 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 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$271Average$390FlexibilityNo cancel feeOn-time63%

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