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$127+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BWI
May 11 — May 181
Mon 5/11
Mon 5/18
1 adult, Economy
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Find cheap flights from Portland to Baltimore with Cheapflights

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Cheapflights Tip: The best prices from Portland to Baltimore/Washington are usually found in February 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

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 April 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:18 pm
PWM
-
BWI
1 stop24h 41m
Multiple Airlines
Tue 5/59:13 pm
BWI
-
PWM
2 stops19h 03m
Multiple Airlines
Deal found 4/10$268
This Southwest deal was found by Cheapflights users on 4/7. 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 4/296:10 am
PWM
-
BWI
Nonstop1h 45m
Southwest
Wed 4/2910:50 am
BWI
-
PWM
Nonstop1h 30m
Southwest
Deal found 4/7$277
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:26 pm
PWM
-
BWI
1 stop15h 27m
Multiple Airlines
Sat 5/309:48 pm
BWI
-
PWM
2 stops21h 28m
Multiple Airlines
Deal found 4/10$280
This Southwest deal was found by Cheapflights users on 4/8. 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 5/51:00 pm
PWM
-
BWI
Nonstop1h 40m
Southwest
Tue 5/59:00 pm
BWI
-
PWM
Nonstop1h 35m
Southwest
Deal found 4/8$289
This Southwest deal was found by Cheapflights users on 4/6. 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 5/25:40 am
PWM
-
BWI
Nonstop1h 45m
Southwest
Mon 5/49:50 pm
BWI
-
PWM
Nonstop1h 35m
Southwest
Deal found 4/6$301
This Delta deal was found by Cheapflights users on 4/11. 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 5/74:48 pm
PWM
-
BWI
1 stop6h 29m
Delta
Tue 5/125:26 pm
BWI
-
PWM
2 stops7h 17m
Delta
Deal found 4/11$304
This Delta deal was found by Cheapflights users on 4/6. 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 5/54:43 pm
PWM
-
BWI
1 stop6h 16m
Delta
Tue 5/126:10 am
BWI
-
PWM
1 stop5h 45m
Delta
Deal found 4/6$307
This American Airlines deal was found by Cheapflights users on 4/6. 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 5/305:57 pm
PWM
-
BWI
1 stop6h 10m
American Airlines
Tue 6/210:06 am
BWI
-
PWM
1 stop7h 01m
American Airlines
Deal found 4/6$309
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:57 am
PWM
-
BWI
1 stop9h 54m
Multiple Airlines
Tue 5/59:13 pm
BWI
-
PWM
2 stops19h 03m
Multiple Airlines
Deal found 4/6$310
This Delta deal was found by Cheapflights users on 4/10. 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 5/64:43 pm
PWM
-
BWI
1 stop6h 16m
Delta
Sat 5/96:10 am
BWI
-
PWM
1 stop5h 45m
Delta
Deal found 4/10$311
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:18 pm
PWM
-
BWI
1 stop24h 41m
Multiple Airlines
Sun 5/39:10 pm
BWI
-
PWM
1 stop11h 57m
Multiple Airlines
Deal found 4/10$314

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 April 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$268
(Kiwi.com)

One-way from

$127
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$365
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. 8% potential increase in price ($36 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 April 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 April 11, 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

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 5/6

4:43 pm-10:59 pm

1 stop6h 16m

Baltimore/Washington

Sat 5/9

5:26 pm-12:43 am

2 stops7h 17m

$316

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 5/9

4:49 pm-11:17 pm

1 stop6h 28m

Baltimore/Washington

Sat 5/16

5:26 pm-12:43 am

2 stops7h 17m

$316

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Thu 5/7

4:50 pm-6:35 pm

Nonstop1h 45m

Baltimore/Washington

Fri 5/8

9:50 pm-11:25 pm

Nonstop1h 35m

$330
Quickest round-trip

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 5/29

12:45 pm-2:25 pm

Nonstop1h 40m

Baltimore/Washington

Sun 5/31

10:30 pm-12:05 am

Nonstop1h 35m

$359

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 5/27

6:02 am-4:38 pm

2 stops10h 36m

Baltimore/Washington

Fri 5/29

5:26 pm-12:43 am

2 stops7h 17m

$375

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Mon 4/27

11:42 am-10:59 pm

2 stops11h 17m

Baltimore/Washington

Tue 4/28

6:03 am-4:45 pm

2 stops10h 42m

$510

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 4/25

12:45 pm-2:25 pm

Nonstop1h 40m

Baltimore/Washington

Mon 4/27

9:50 pm-11:25 pm

Nonstop1h 35m

$512

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 5/6

4:43 pm-10:59 pm

1 stop6h 16m

Baltimore/Washington

Sun 5/10

9:25 am-4:07 pm

1 stop6h 42m

$550

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Thu 5/7

1:18 pm-11:17 pm

2 stops9h 59m

Baltimore/Washington

Mon 5/11

6:10 am-11:55 am

1 stop5h 45m

$554
Cheapest one-way

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Wed 6/17

3:45 pm-5:35 pm

Nonstop1h 50m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/6

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Baltimore. Price data was last updated on April 9, 2026.

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, July is the cheapest month in which you can book a flight from Portland, Maine to Baltimore (average of $62). Flying from Portland, Maine to Baltimore in March is currently the most expensive (average of $138). 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 April 11, 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 at noon could potentially save you up to 40% on airfare.

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

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 April 11, 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
4,335 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,335 reviews
Southwest
8.0
Very good
4,335 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 1 airline. 1h 40m 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 53 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 $277, Southwest can have you in Baltimore from Portland, Maine in 1h 45m. The distance between Portland, Maine and Baltimore is about 451 mi. Generally, flights for this route are nonstop.

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

    Southwest, at $246, was found to be the cheapest airline from Portland, Maine to Baltimore.. Southwest is priced at 33% 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 $289 on average, our data indicates $364 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, July is the cheapest month in which you can book a flight from Portland, Maine to Baltimore (average of $62). Flying from Portland, Maine to Baltimore in March is currently the most expensive (average of $138). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$246Average$365FlexibilityNo cancel feeOn-time63%

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