$129+ Cheap flights from Baltimore to Portland, ME (BWI - PWM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — PWM
Oct 4 — Oct 111
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Baltimore/Washington to Portland are usually found in January or April, booked 70 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap flight deals from Baltimore to Portland
Cheapest
Best
Last-minute
One-way
Cheapest flights from Baltimore to PortlandExplore 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 September 4, 2026.
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 September 4, 2026.
This Southwest deal was found by Cheapflights users on 9/2. 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 10/2410:35 am -
Nonstop1h 30m
Tue 10/2712:55 pm -
Nonstop1h 40m
Deal found 9/2![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 8/31. 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.
Tue 9/299:45 am -
1 stop6h 10m
Wed 10/72:09 pm -
1 stop7h 21m
Deal found 8/31![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 9/2. 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 10/246:10 am -
1 stop6h 12m
Tue 10/276:28 am -
2 stops10h 23m
Deal found 9/2![Delta logo]()
$272
This Southwest deal was found by Cheapflights users on 9/2. 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 10/303:25 pm -
Nonstop1h 30m
Mon 11/25:20 am -
Nonstop2h 00m
Deal found 9/2![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 9/3. 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.
Sat 11/76:10 am -
1 stop6h 12m
Tue 11/104:03 pm -
2 stops7h 24m
Deal found 9/3![Delta logo]()
$292
This Southwest deal was found by Cheapflights users on 9/2. 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 10/210:25 pm -
Nonstop1h 30m
Thu 10/85:20 am -
Nonstop1h 45m
Deal found 9/2![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 9/2. 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 9/267:30 pm -
Nonstop1h 35m
Wed 9/305:45 am -
Nonstop1h 40m
Deal found 9/2![Southwest logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:40 am -
2 stops12h 11m
Wed 11/116:31 pm -
1 stop26h 33m
Deal found 8/30![Multiple Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 8/31. 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 9/305:10 pm -
1 stop6h 18m
Wed 10/72:09 pm -
1 stop7h 21m
Deal found 8/31![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 9/2. 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.
Mon 10/266:10 am -
1 stop5h 47m
Fri 10/306:28 am -
2 stops10h 23m
Deal found 9/2![Delta logo]()
$315
Best flights from Baltimore to PortlandDiscover carefully curated flight deals from Baltimore to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Baltimore to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This Southwest deal was found by Cheapflights users on 9/2. 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 9/288:55 pm -
Nonstop1h 35m
Tue 9/295:45 am -
Nonstop1h 40m
Deal found 9/2![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 9/3. 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.
Sat 11/712:37 pm -
2 stops8h 24m
Tue 11/104:03 pm -
2 stops7h 24m
Deal found 9/3![Delta logo]()
$298
This Southwest deal was found by Cheapflights users on 9/3. 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.
Fri 11/63:00 pm -
Nonstop1h 30m
Mon 11/95:10 pm -
Nonstop1h 40m
Deal found 9/3![Southwest logo]()
$275
This Southwest deal was found by Cheapflights users on 9/3. 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.
Fri 10/2310:55 am -
Nonstop1h 30m
Mon 10/265:20 am -
Nonstop1h 45m
Deal found 9/3![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 8/31. 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.
Sat 10/1712:37 pm -
2 stops8h 24m
Wed 10/211:52 pm -
2 stops9h 12m
Deal found 8/31![Delta logo]()
$321
This Southwest deal was found by Cheapflights users on 9/3. 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 9/267:30 pm -
Nonstop1h 35m
Wed 9/305:45 am -
Nonstop1h 40m
Deal found 9/3![Southwest logo]()
$300
This Delta deal was found by Cheapflights users on 8/30. 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.
Wed 11/46:10 am -
2 stops10h 37m
Wed 11/1111:39 am -
2 stops11h 48m
Deal found 8/30![Delta logo]()
$364
This Southwest deal was found by Cheapflights users on 9/2. 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 11/198:15 am -
Nonstop1h 35m
Sun 11/221:40 pm -
Nonstop1h 40m
Deal found 9/2![Southwest logo]()
$334
This Southwest deal was found by Cheapflights users on 9/1. 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 10/139:05 pm -
Nonstop1h 35m
Sat 10/175:35 am -
Nonstop1h 45m
Deal found 9/1![Southwest logo]()
$334
This Southwest deal was found by Cheapflights users on 8/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:20 am -
Nonstop1h 30m
Thu 10/2910:25 am -
Nonstop1h 35m
Deal found 8/31![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 8/30. 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.
Mon 10/263:25 pm -
Nonstop1h 30m
Sat 10/3111:10 am -
Nonstop1h 35m
Deal found 8/30![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 9/3. 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.
Thu 9/248:10 am -
Nonstop1h 40m
Sat 9/265:40 am -
Nonstop1h 35m
Deal found 9/3![Southwest logo]()
$411
Last-minute flights from Baltimore to PortlandDiscover last-minute flight deals from Baltimore to Portland. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Portland. Data last updated September 4, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/2. 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 9/267:30 pm -
Nonstop1h 35m
Wed 9/305:45 am -
Nonstop1h 40m
Deal found 9/2![Southwest logo]()
$300
This Delta deal was found by Cheapflights users on 8/31. 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.
Tue 9/299:45 am -
1 stop6h 10m
Wed 10/72:09 pm -
1 stop7h 21m
Deal found 8/31![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 8/31. 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 9/305:10 pm -
1 stop6h 18m
Wed 10/72:09 pm -
1 stop7h 21m
Deal found 8/31![Delta logo]()
$310
This Southwest deal was found by Cheapflights users on 9/2. 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 10/210:25 pm -
Nonstop1h 30m
Thu 10/85:20 am -
Nonstop1h 45m
Deal found 9/2![Southwest logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Tue 10/133:15 pm -
1 stop17h 53m
Mon 10/197:00 am -
2 stops26h 27m
Deal found 9/2![Multiple Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 9/2. 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 10/1610:25 pm -
Nonstop1h 30m
Tue 10/205:40 am -
Nonstop1h 45m
Deal found 9/2![Southwest logo]()
$318
This Delta deal was found by Cheapflights users on 9/1. 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 10/1712:37 pm -
2 stops8h 24m
Wed 10/211:52 pm -
2 stops9h 12m
Deal found 9/1![Delta logo]()
$321
This Southwest deal was found by Cheapflights users on 9/2. 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 10/2410:35 am -
Nonstop1h 30m
Tue 10/2712:55 pm -
Nonstop1h 40m
Deal found 9/2![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 9/2. 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 10/246:10 am -
1 stop6h 12m
Tue 10/271:52 pm -
2 stops9h 12m
Deal found 9/2![Delta logo]()
$272
This Delta deal was found by Cheapflights users on 9/2. 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.
Mon 10/266:10 am -
1 stop5h 47m
Fri 10/306:28 am -
2 stops10h 23m
Deal found 9/2![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 9/2. 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 10/303:25 pm -
Nonstop1h 30m
Mon 11/25:20 am -
Nonstop2h 00m
Deal found 9/2![Southwest logo]()
$275
One-way flights from Baltimore to PortlandSearch for one-way flight options from Baltimore to Portland. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Baltimore to Portland. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Southwest deal was found by Cheapflights users on 9/3. 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.
Thu 10/2910:25 pm -
Nonstop1h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$129
This Delta deal was found by Cheapflights users on 9/3. 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.
Sat 10/32:03 pm -
1 stop6h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 11/49:12 pm -
2 stops40h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Tue 9/2910:22 am -
2 stops34h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$138
This Delta deal was found by Cheapflights users on 9/1. 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 11/36:10 am -
2 stops7h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Delta logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Tue 9/2210:22 am -
2 stops34h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$144
This Southwest deal was found by Cheapflights users on 9/2. 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 10/210:25 pm -
Nonstop1h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Mon 9/286:00 am -
2 stops17h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$149
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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $257 (Southwest) |
One-way from | $129 (Southwest) |
Popular in | November |
Cheapest in | January |
Average price | $419 |
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 7,457,451 searches. Data last updated September 4, 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
Cheapest round-trip
Quickest round-trip
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Thu 10/29
10:25 pm-11:55 pm
Nonstop1h 30m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Sat 10/31
8:40 am-10:10 am
Nonstop1h 30m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Wed 12/2
8:15 pm-9:45 pm
Nonstop1h 30m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Sat 10/3
8:40 pm-10:10 pm
Nonstop1h 30m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Mon 11/23
4:50 pm-11:31 pm
1 stop6h 41m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$134
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Sat 10/3
2:03 pm-9:00 pm
1 stop6h 57m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$134
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Mon 11/2
7:00 am-1:02 pm
1 stop6h 02m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$134
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Wed 12/2
6:00 am-3:20 pm
2 stops9h 20m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Fri 11/6
10:20 pm-11:50 pm
Nonstop1h 30m
Portland
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$147
BaltimorePortland
BWI Baltimore/Washington - PWM Portland
BWIPWM
Baltimore/Washington
Mon 9/28
8:55 pm-10:30 pm
Nonstop1h 35m
Portland
Tue 9/29
5:45 am-7:25 am
Nonstop1h 40m
$275
Showing 1-10 of 21 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
BWI-PWM
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 69 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 September 4, 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 21% 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 August 29, 2026.
Travelers seeking maximum savings on their Baltimore to Portland, Maine flight should consider departing on Saturday evenings 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.
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 September 4, 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.
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
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.
Traveling to a place near Portland?
Book flights to Portland if you plan to visit one of these locationsNorth Conway
Lewiston
Brunswick
Conway
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Portland flight routes
Alternative routes for Baltimore to Portland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Baltimore to Portland by cabin class
Find flights from Baltimore to Portland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Baltimore and Portland flights
Browse other Baltimore and Portland flight options. Last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Portland
Explore flights to Portland departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 4, 2026.
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 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$261 | Average$416 | FlexibilityNo cancel fee | On-time63% |