Route guide · 451 miles
Cheap Flights from Baltimore to Portland
BWI → PWM · Nonstop 1h 25m · Live round-trip fares
If Portland is next on your list, here's the honest picture on fares from Baltimore. The trip covers about 451 miles and takes roughly 1h 25m in the air. Prices on this route reward planners: booking 2–4 weeks ahead is the sweet spot, and the lowest fares tend to sell out fast.
Live fares for BWI → PWM are updating. Use the search below for real-time prices.
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Updated daily
Flight time
1h 25m
Nonstop, typical
Distance
451 mi
BWI → PWM
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
1
Southwest Airlines
Nonstop flights from Baltimore to Portland
The fastest way between the two cities is the nonstop: about 1h 25m for the 451-mile run from BWI to PWM. Those flights are flown by Southwest Airlines. Prices behave best when you book 2–4 weeks out.
Booking insights: Baltimore → Portland
- Distance: 451 miles · nonstop flight time: 1h 25m.
- Cheapest upcoming week in the live data starts around Oct 15, with fares from $228.
- Fares tend to bottom out when you book about 2–4 weeks ahead — earlier than that rarely helps, later usually hurts.
- Midweek departures (Tue–Thu) are consistently cheaper than weekend flights.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
Cheapest month · Baltimore → Portland
October 2026
Every date's recent round-trip fare, at a glance.
Fares from
$228
Cheapest: Wed, Oct 21 — $228
Get this fare →Recent fares found for specific dates in October 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from Baltimore to Portland: what you need to know
The flight
At 451 miles, BWI to PWM is one of those quick up-and-down flights: roughly 1h 25m nonstop. There's no meal service to plan around — the decisions that matter here are departure time and which airport entrance traffic is kinder to you.
Airlines on this route
Southwest Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Baltimore (BWI)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Baltimore airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Portland (PWM)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Portland airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Portland to Baltimore fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 451 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 1h 25m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
Baltimore to Portland flight FAQs
How long is the flight from BWI to PWM?
A nonstop from BWI to PWM clocks in at around 1h 25m for the 451-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from Baltimore to Portland?
Southwest Airlines typically operate nonstop flights from BWI to PWM. Nonstops are usually cheapest when booked 2–4 weeks ahead of departure.
What is the cheapest month to fly from Baltimore to Portland?
There's no single magic month, but prices on this route generally soften in the shoulder season, when demand dips after the holidays and again in early fall. A free fare alert is the easiest way to catch those windows.
How much are last minute flights from BWI to PWM?
Last-minute flights from BWI to PWM (booked within 7 days of departure) typically cost noticeably more than fares booked 2–4 weeks out. Booking early is the smarter move.
What is a good round-trip deal from Baltimore to Portland?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Baltimore to Portland?
You'll mainly see Southwest Airlines on Baltimore to Portland. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to Baltimore airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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