$54 Cheap Flights from San Diego (SAN) to Baltimore (BWI)

View $54 flight on Wed, May 28, 2025Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Airport (BWI)

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Find available prices by choosing your travel dates.

Cheap Flights from San Diego to Baltimore (SAN-BWI)

Prices were available within the past 7 days and start at $54 for one-way flights and $151 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Wed, May 28 - Sat, May 31
SAN
San Diego
BWI
Baltimore
$151 Roundtrip, found 1 hour ago
$151
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Wed, May 28 from San Diego to Baltimore, returning Sat, May 31, priced at $151 found 1 hour ago
Spirit Airlines
Thu, May 22 - Wed, May 28
SAN
San Diego
BWI
Baltimore
$153 Roundtrip, found 9 hours ago
$153
Roundtrip
found 9 hours ago
Select Spirit Airlines flight, departing Thu, May 22 from San Diego to Baltimore, returning Wed, May 28, priced at $153 found 9 hours ago
Spirit Airlines
Wed, May 28 - Mon, Jun 9
SAN
San Diego
BWI
Baltimore
$158 Roundtrip, found 15 hours ago
$158
Roundtrip
found 15 hours ago
Select Spirit Airlines flight, departing Wed, May 28 from San Diego to Baltimore, returning Mon, Jun 9, priced at $158 found 15 hours ago
Spirit Airlines
Thu, May 22 - Tue, Jun 3
SAN
San Diego
BWI
Baltimore
$159 Roundtrip, just found
$159
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, May 22 from San Diego to Baltimore, returning Tue, Jun 3, priced at $159 just found
Spirit Airlines
Wed, May 21 - Fri, May 30
SAN
San Diego
BWI
Baltimore
$163 Roundtrip, found 1 day ago
$163
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Wed, May 21 from San Diego to Baltimore, returning Fri, May 30, priced at $163 found 1 day ago
Spirit Airlines
Wed, May 21 - Wed, May 28
SAN
San Diego
BWI
Baltimore
$165 Roundtrip, found 16 hours ago
$165
Roundtrip
found 16 hours ago
Select Spirit Airlines flight, departing Wed, May 21 from San Diego to Baltimore, returning Wed, May 28, priced at $165 found 16 hours ago
Frontier Airlines
Sat, May 24 - Tue, May 27
SAN
San Diego
BWI
Baltimore
$197 Roundtrip, found 9 hours ago
$197
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Sat, May 24 from San Diego to Baltimore, returning Tue, May 27, priced at $197 found 9 hours ago
American Airlines
Thu, May 15 - Sat, May 17
SAN
San Diego
BWI
Baltimore
$281 Roundtrip, found 7 hours ago
$281
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, May 15 from San Diego to Baltimore, returning Sat, May 17, priced at $281 found 7 hours ago
Southwest Airlines
Wed, Jul 9 - Sun, Jul 13
SAN
San Diego
BWI
Baltimore
$327 Roundtrip, just found
$327
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Jul 9 from San Diego to Baltimore, returning Sun, Jul 13, priced at $327 just found
Sun Country Airlines
Wed, Oct 29 - Sun, Nov 16
SAN
San Diego
BWI
Baltimore
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago
Select Sun Country Airlines flight, departing Wed, Oct 29 from San Diego to Baltimore, returning Sun, Nov 16, priced at $337 found 1 day ago
Flights from San Diego (SAN) to Baltimore (BWI)
Origin airport
San Diego Intl.
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$151
Distance
2290 mi

San Diego to Baltimore Flights

The cheapest times to fly from San Diego to Baltimore

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Diego to Baltimore are during the month of May. You can find some of the cheapest flights from San Diego to Baltimore with Expedia's search tool and vast selection of airlines.

The best time to book a flight from San Diego to Baltimore

Sunday is one of the best days to book for cheap flights from San Diego to Baltimore: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from San Diego to Baltimore

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Diego to Baltimore in 2025. You can also book with separate airlines for your outbound and return journeys, from $54 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Diego to Baltimore flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Diego to Baltimore airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) cost?
Book cheap return tickets starting from $282 from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines and Alaska Airlines flight leaving SAN on May 13 2025 and touching down at BWI. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from SAN to BWI?
The cheapest flights from SAN to BWI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
If you’re departing from San Diego Intl. Airport (SAN), you can board a direct flight to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) with Southwest Airlines.
What is the cheapest airline that flies from SAN to BWI?
With prices as low as $164 for a one-way journey from SAN to BWI, Southwest Airlines is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAN on July 20 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
On average, San Diego Intl. Airport (SAN) only has 1 nonstop flight to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) daily. For more options, try Expedia’s easy-to-use filters. Simply enter your dates of travel, then choose “1 Stop” or “2+ Stops” to discover flights with layovers.
What are the most popular departure times for flights from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The 10 AM departures from SAN to BWI are the most sought after. Greater demand means you’ll likely pay more for these departures. If you’re looking to save, choose a less crowded time to fly.
What day of the week has the most flights from SAN to BWI?
Sunday offers the most flights from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Consider jetting off on this day and you’ll have a greater chance of finding a departure that fits your itinerary.
What is the earliest flight from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Take the earliest flight at around 7:30AM UTC-8, leaving from San Diego Intl. Airport (SAN). You’ll be flying for around 4h 45m, coming in to land at Baltimore Washington Intl. Thurgood Marshall Airport (BWI) at approximately 3:15PM UTC-5.
How long does it take to fly from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The average flight time from SAN to BWI is 4 hours and 46 minutes, covering a total distance of 2,300 mi.
What airline has the least delays from SAN to BWI?
Alaska Airlines has the strongest track record for on-time direct flights from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI), with an on-time rating of 88%. Use the Expedia App to see your journey status before you leave and get notified of any changes.
What is the best time to fly from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Opt for a flight from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Baltimore from San Diego Intl. Airport (SAN)?
If you’re leaving on a direct flight from San Diego Intl. Airport (SAN) to Baltimore, you’ll land at either Washington Dulles Intl. Airport (IAD) or Baltimore Washington Intl. Thurgood Marshall Airport (BWI).
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) last-minute?
Holding off until right before your break to book a flight from SAN to BWI often results in higher prices. Although you may find some last-minute deals, they aren’t always guaranteed. Keep your travel schedule open for a better chance of landing a bargain.
Is it cheaper to book a SAN to BWI flight and hotel package?
You’ll typically save money by booking a SAN to BWI flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage it all in one convenient place. Once you’ve selected your preferred accommodations and flights, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Generally, it’s possible to cancel or reschedule your SAN to BWI flight. However, if it’s been more than 24 hours since booking, additional charges may apply. Check your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find further details on our Customer Service portal.

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