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Find cheap Southwest flights to Boston

RDU — BOS
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Southwest flight deals to Boston

Cheapest Southwest flights from USA to Boston
Explore the most affordable Southwest flight options available from USA to Boston. Find the lowest fares with prices last updated on July 27, 2026.

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.
Sat 8/226:30 am
BWI
-
BOS
Nonstop1h 30m
Southwest
Sat 8/294:35 pm
BOS
-
BWI
Nonstop1h 45m
Southwest
Deal found 7/26$134
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 8/296:30 am
BWI
-
BOS
Nonstop1h 30m
Southwest
Sun 9/66:40 am
BOS
-
BWI
Nonstop1h 35m
Southwest
Deal found 7/23$139
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.
Sat 8/154:00 pm
BWI
-
BOS
Nonstop1h 30m
Southwest
Wed 8/195:25 am
BOS
-
BWI
Nonstop1h 30m
Southwest
Deal found 7/22$142

Flights to Boston with Southwest at a glance

Find detailed information about Southwest flights from USA to Boston. Explore the options provided by Southwest to plan your journey from USA to Boston. Data last updated July 27, 2026.

Popular in

June

Cheapest in

January

Average price

$373

Round-trip from

$122

One-way from

$59

Good one-way deal

$135 or less
Highest demand for flights to Boston with Southwest; 17% potential price increase.
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Best time to find cheap flights to Boston with Southwest; 2% potential price drop.
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Average price for flights to Boston with Southwest (round-trip).
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Southwest
  • Southwest
  • 9/3-9/6
  • Nonstop
  • 3h 05m total
  • USA to Boston
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Southwest
  • Southwest
  • 9/1
  • Nonstop
  • 1h 40m total
  • USA to Boston
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Price to beat on a one-way flight from the United States to Boston with Southwest.
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Cheapflights Insights

Find cheap Southwest flights to Boston

How long is the flight to Boston with Southwest?

On average, Southwest flights from the United States to Boston take 2 hours 53 minutes. Flights to Boston from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Southwest weekly flight availability to Boston

The most flights to Boston operated by Southwest are scheduled on a Monday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (25 on average).

When is the best time to book a flight to Boston with Southwest?

The best time to book a flight to Boston with Southwest is 84 days before departure. On average, fares are higher if you book 2 days before departure.

When is the cheapest time to fly to Boston with Southwest?

Users looking for the cheapest Southwest fares to Boston should consider flying on Thursday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday at noon, when prices are usually at their highest.

FAQs about flights to Boston with Southwest

  • Which airport do Southwest flights arrive at when travelling to Boston?

    Southwest flights on this route tend to land at Boston Logan Intl Airport.

  • Is Southwest the cheapest airline for a flight to Boston?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Boston tends to be with Avelo Airlines.

  • Are there alternative airlines other than Southwest that fly to Boston?

    JetBlue, Delta and American Airlines all fly to Boston and offer an alternative to Southwest.

  • How much is a flight to Boston with Southwest?

    The average price for a return flight with Southwest is $432; with a one-way flight around $271.

See more FAQs

Reviews of Southwest

See what Cheapflights users have to say about their Southwest experience.
Southwest
8.0
Very good
4,229 reviews
Overview

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Popular Southwest flights

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