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$88+ Cheap flights from San Diego to Baltimore (SAN - 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BWI
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Baltimore/Washington are usually found in August or September, booked 32 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from San Diego to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 septiembre 15, 2025.

Round-trip from

$180
(United Airlines)

One-way from

$88
(United Airlines)

Popular in

November

Cheapest in

August

Average price

$336
From San Diego to Baltimore/Washington
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One-way flight from San Diego to Baltimore/Washington
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Highest demand for flights based on searches. 14% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Diego to Baltimore

Cheapest flights from San Diego to Baltimore
Explore the most affordable flight options available from San Diego to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/278:40 pmSAN - BWI
1 stop8h 16mUnited Airlines
sáb. 11/14:12 pmBWI - SAN
1 stop7h 55mUnited Airlines
Deal found 9/13$180
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/237:23 pmSAN - BWI
1 stop11h 55mFrontier
lun. 10/276:29 pmBWI - SAN
1 stop21h 59mFrontier
Deal found 9/14$183
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/186:53 amSAN - BWI
1 stop9h 34mUnited Airlines
mar. 10/215:20 pmBWI - SAN
1 stop7h 54mUnited Airlines
Deal found 9/14$185
This American Airlines deal was found by Cheapflights users on 9/14. 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.
sáb. 10/118:18 amSAN - BWI
1 stop7h 00mAmerican Airlines
sáb. 10/185:00 amBWI - SAN
1 stop7h 09mAmerican Airlines
Deal found 9/14$186
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/212:04 pmSAN - BWI
1 stop26h 38mFrontier
lun. 10/612:53 pmBWI - SAN
1 stop8h 01mFrontier
Deal found 9/14$188
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:02 amSAN - BWI
2 stops8h 58mUnited Airlines
lun. 12/85:18 pmBWI - SAN
1 stop8h 12mUnited Airlines
Deal found 9/14$190
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
vie. 10/246:41 amSAN - BWI
1 stop8h 03mFrontier
lun. 10/276:29 pmBWI - SAN
1 stop8h 21mFrontier
Deal found 9/14$195
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/177:43 pmSAN - BWI
1 stop11h 40mFrontier
lun. 10/206:29 pmBWI - SAN
1 stop8h 21mFrontier
Deal found 9/14$198
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
mar. 10/218:00 amSAN - BWI
1 stop17h 30mMultiple Airlines
jue. 10/236:21 pmBWI - SAN
1 stop20h 56mMultiple Airlines
Deal found 9/14$201
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
mar. 10/218:00 amSAN - BWI
1 stop17h 30mMultiple Airlines
lun. 10/276:29 pmBWI - SAN
1 stop8h 21mMultiple Airlines
Deal found 9/14$203
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/36:35 amSAN - BWI
1 stop8h 07mFrontier
lun. 10/612:53 pmBWI - SAN
1 stop8h 01mFrontier
Deal found 9/14$204
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/66:35 amSAN - BWI
1 stop8h 07mFrontier
lun. 10/206:29 pmBWI - SAN
1 stop8h 21mFrontier
Deal found 9/15$206

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 septiembre 15, 2025.
Use the filters below to find and compare flights from San Diego to Baltimore that are best for you.

Fly from

San Diego

Fly to

Baltimore

Route

Depart

Return

Price

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mié. 12/3

11:02 am-9:27 pm

1 stop7h 25m

Baltimore/Washington

lun. 12/8

8:30 am-3:02 pm

1 stop9h 32m

$185

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mié. 10/22

12:52 pm-11:18 pm

1 stop7h 26m

Baltimore/Washington

vie. 10/31

6:35 pm-12:13 am

1 stop8h 38m

$185

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

vie. 10/17

10:30 pm-9:55 am

1 stop8h 25m

Baltimore/Washington

mar. 10/21

4:21 pm-8:25 pm

1 stop7h 04m

$185

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mié. 10/22

11:08 am-11:18 pm

2 stops9h 10m

Baltimore/Washington

mar. 10/28

10:10 am-3:00 pm

1 stop7h 50m

$230

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

sáb. 10/18

11:08 am-11:18 pm

2 stops9h 10m

Baltimore/Washington

mar. 10/21

7:28 pm-11:41 pm

1 stop7h 13m

$230

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mar. 10/28

2:24 pm-10:28 am

2 stops17h 04m

Baltimore/Washington

jue. 11/6

8:25 pm-12:35 pm

1 stop19h 10m

$238

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mié. 10/22

8:00 am-4:30 am

1 stop17h 30m

Baltimore/Washington

lun. 10/27

2:52 pm-11:04 pm

2 stops11h 12m

$240

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mar. 10/21

9:10 pm-5:15 am

Nonstop5h 05m

Baltimore/Washington

mié. 10/29

6:50 am-9:30 am

Nonstop5h 40m

$247

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

sáb. 10/18

9:10 pm-5:15 am

Nonstop5h 05m

Baltimore/Washington

mar. 10/21

6:50 am-9:30 am

Nonstop5h 40m

$247

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

mié. 10/22

9:10 pm-5:15 am

Nonstop5h 05m

Baltimore/Washington

mar. 10/28

6:40 pm-11:20 pm

1 stop7h 40m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 23 results
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The best insider tips for San Diego to Baltimore flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Diego to Baltimore trip
Airports
SAN

Plan to arrive at SAN at least two hours before your flight to avoid stress from potential traffic congestion near the airport.

Read more about SANby Blane Bachelor
BWI

Use the MTA Light Rail for a quick and easy trip from BWI to downtown Baltimore, or take Amtrak for travel to Washington, D.C.

Read more about BWIby Emily Zemler
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from San Diego to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from San Diego 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 San Diego to Baltimore

How far ahead should I book a flight from San Diego to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Baltimore. Price data was last updated on September 12, 2025.

The best time to book flights from San Diego to Baltimore is 32 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Diego to Baltimore?

Currently, August is the cheapest month in which you can book a flight from San Diego to Baltimore (average of $241). Flying from San Diego to Baltimore in March is currently the most expensive (average of $290). 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 SAN to BWI?

Find hourly flight availability from San Diego 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 septiembre 15, 2025.

It’s optimal to fly from San Diego to Baltimore in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from San Diego to Baltimore?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Baltimore. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their San Diego to Baltimore flight should consider departing on Monday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 septiembre 15, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from San Diego to Baltimore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,015 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Diego 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 San Diego to Baltimore?

    You will need to book a flight from San Diego to Baltimore/Washington if you want to fly from San Diego to Baltimore. At least 7 different airlines have flights from San Diego (SAN) to Baltimore/Washington (BWI) on a regular basis. There are 2 flights to Baltimore from the San Diego airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SAN to BWI to be around 4h 50m.

  • How popular is this San Diego to Baltimore flight route?

    Within the past month, 22 users have taken a look at flights from San Diego to Baltimore/Washington.

  • How long is the flight from San Diego to Baltimore?

    United Airlines can get you from San Diego to Baltimore in just under 7h 26m. Your travel time can differ by up to . There are 2289 mi between San Diego and Baltimore.

  • What are the cheapest airlines flying from San Diego to Baltimore round-trip?

    Currently priced at $128, Frontier will fly you from San Diego to Baltimore and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Alaska Airlines - these airlines can fly you to your destination from $145 and $237, respectively. Users have found that Frontier is 68% cheaper than the other options available to this destination.

  • What are the cheapest flights from San Diego to Baltimore?

    Looking at all options, your cheapest flight can be booked for $120. While the most popular route (San Diego - Baltimore/Washington) can be booked for $149 on average, our data indicates $326 when flying from San Diego to Baltimore.

  • Can I find deals for flights from San Diego to Baltimore that include hotel bookings?

    Yes. In addition to deals on San Diego to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Baltimore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Baltimore.

  • Can I find deals for business class flights from San Diego to Baltimore?

    Yes. Cheapflights offers flight deals from San Diego 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 San Diego to Baltimore?

    Currently, August is the cheapest month in which you can book a flight from San Diego to Baltimore (average of $241). Flying from San Diego to Baltimore in March is currently the most expensive (average of $290). 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

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Top 7 airlines flying from San Diego to Baltimore

Discover the top 7 airlines that operate flights from San Diego 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$272FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$145Average$288FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$237Average$356FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$237Average$444FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$311Average$500FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$318Average$487FlexibilityNo cancel feeOn-time63%

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