Baltimore

$80+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BWI
Jan 22 — Jan 291
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Find cheap flights from San Diego to Baltimore with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Diego to Baltimore/Washington are usually found in August or October, booked 32 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 December 23, 2025.

This Frontier deal was found by Cheapflights users on 12/21. 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.
Fri 12/266:45 amSAN - BWI
1 stop10h 28mFrontier
Mon 1/1212:49 pmBWI - SAN
1 stop13h 47mFrontier
Deal found 12/21$312
This Frontier deal was found by Cheapflights users on 12/21. 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.
Mon 12/226:25 amSAN - BWI
1 stop7h 22mFrontier
Thu 1/1512:42 pmBWI - SAN
1 stop14h 42mFrontier
Deal found 12/21$332
This Frontier deal was found by Cheapflights users on 12/21. 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.
Sat 12/276:40 amSAN - BWI
1 stop10h 33mFrontier
Thu 1/1512:42 pmBWI - SAN
1 stop14h 42mFrontier
Deal found 12/21$342
This Frontier deal was found by Cheapflights users on 12/21. 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.
Fri 12/266:45 amSAN - BWI
1 stop10h 28mFrontier
Sun 1/1112:49 pmBWI - SAN
1 stop14h 00mFrontier
Deal found 12/21$347
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/2410:56 amSAN - BWI
1 stop7h 30mUnited Airlines
Tue 1/1312:25 pmBWI - SAN
1 stop9h 11mUnited Airlines
Deal found 12/21$359
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 12/294:00 pmSAN - BWI
1 stop10h 14mUnited Airlines
Tue 1/138:42 amBWI - SAN
1 stop9h 10mUnited Airlines
Deal found 12/20$362
This Southwest deal was found by Cheapflights users on 12/21. 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.
Wed 12/2410:40 amSAN - BWI
1 stop7h 20mSouthwest
Tue 1/136:20 amBWI - SAN
Nonstop6h 05mSouthwest
Deal found 12/21$364
This Delta deal was found by Cheapflights users on 12/21. 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.
Sun 12/289:45 pmSAN - BWI
1 stop8h 33mDelta
Wed 1/1411:24 amBWI - SAN
1 stop9h 15mDelta
Deal found 12/21$367
This Frontier deal was found by Cheapflights users on 12/21. 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.
Sat 12/276:40 amSAN - BWI
1 stop10h 33mFrontier
Sun 1/1112:49 pmBWI - SAN
1 stop14h 00mFrontier
Deal found 12/21$377
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/241:06 pmSAN - BWI
2 stops18h 49mFrontier
Thu 1/1512:42 pmBWI - SAN
1 stop14h 42mFrontier
Deal found 12/21$381

Find 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 December 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$191
(Kiwi.com)

One-way from

$80
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$473
Provider with most accurate pricing for San Diego-Baltimore/Washington flight deals.
Provider most trusted by Cheapflights users for San Diego-Baltimore/Washington flights.
From San Diego to Baltimore/Washington
One-way flight from San Diego to Baltimore/Washington
Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in December 2025

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 December 23, 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

Thu 1/15

6:54 am-7:23 am

2 stops21h 29m

Baltimore/Washington

Mon 1/19

12:34 pm-12:11 am

1 stop14h 37m

$211

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Tue 3/10

3:38 pm-5:51 am

2 stops11h 13m

Baltimore/Washington

Wed 3/18

5:40 am-2:43 pm

2 stops12h 03m

$276

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Tue 1/20

6:55 pm-10:27 am

2 stops12h 32m

Baltimore/Washington

Tue 1/27

6:00 am-2:29 pm

2 stops11h 29m

$276

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Tue 1/20

9:45 pm-5:30 am

Nonstop4h 45m

Baltimore/Washington

Tue 1/27

6:20 am-9:25 am

Nonstop6h 05m

$277

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Wed 2/11

1:00 pm-11:15 pm

1 stop7h 15m

Baltimore/Washington

Wed 2/18

4:09 pm-10:35 pm

1 stop9h 26m

$277

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Sat 1/17

9:45 pm-5:30 am

Nonstop4h 45m

Baltimore/Washington

Sat 1/24

1:15 pm-7:20 pm

1 stop9h 05m

$277

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Tue 1/20

11:10 am-11:15 pm

1 stop9h 05m

Baltimore/Washington

Tue 1/27

10:05 am-3:36 pm

1 stop8h 31m

$277

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Wed 1/14

9:45 pm-5:30 am

Nonstop4h 45m

Baltimore/Washington

Sat 1/17

6:15 am-11:05 am

1 stop7h 50m

$277

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Tue 1/13

1:00 pm-11:15 pm

1 stop7h 15m

Baltimore/Washington

Sat 1/17

10:05 am-3:36 pm

1 stop8h 31m

$277

San DiegoBaltimore

SAN - BWI

SANBWI

San Diego

Tue 1/13

6:15 am-4:38 pm

1 stop7h 23m

Baltimore/Washington

Sat 1/17

6:03 pm-10:31 pm

1 stop7h 28m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 24 results
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Compare providers for flights from San Diego to Baltimore

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 San Diego to Baltimore in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Baltimore flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Diego-Baltimore flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Diego-Baltimore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Baltimore flights, Cheapflights users trust CheapOair the most. CheapOair 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 San Diego-Baltimore 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 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 December 19, 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, June is the cheapest month in which you can book a flight from San Diego to Baltimore (average of $99). Flying from San Diego to Baltimore in December is currently the most expensive (average of $206). 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 December 23, 2025.

It’s optimal to fly from San Diego to Baltimore in the evening. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight at noon.

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 December 20, 2025.

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

The best insider tips for San Diego to Baltimore flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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.

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.

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

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 December 23, 2025.
See what other customers who have flown with Southwest, United Airlines, and American 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.

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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 5 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 45m.

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

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

    Frontier, Delta, and Southwest can get you from San Diego to Baltimore in just under 4h 45m. Your travel time can differ by up to 16h 44m. There are 2289 mi between San Diego and Baltimore. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $117, 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 Delta - these airlines can fly you to your destination from $144 and $229, respectively. Users have found that Frontier is 70% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from San Diego to Baltimore one-way?

    The cheapest airlines for a one-way flight from San Diego to Baltimore are Frontier ($83), Spirit Airlines ($86), and Alaska Airlines ($118).

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

    Looking at all options, your cheapest flight can be booked for $108. While the most popular route (San Diego - Baltimore/Washington) can be booked for $216 on average, our data indicates $380 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, June is the cheapest month in which you can book a flight from San Diego to Baltimore (average of $99). Flying from San Diego to Baltimore in December is currently the most expensive (average of $206). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Diego to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.

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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$282FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$144Average$241FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$237Average$337FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$237Average$405FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$286Average$487FlexibilityNo cancel feeOn-time71%
DeltaCheapest$288Average$417FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$290Average$459FlexibilityNo cancel feeOn-time63%

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