United States · Baltimore
Baltimore/Washington International Thurgood Marshall Airport (BWI) Online Check-in
Maryland's main airport, Southwest's largest East Coast base. Single connected terminal. Lower-cost alternative to IAD/DCA.
Now at Baltimore/Washington International Thurgood Marshall Airport
- Security wait (today, avg) 18 min
- Disruption No reported disruption
- Weather impact Clear, 14 °C
Quick information
Airlines we cover at Baltimore/Washington International Thurgood Marshall Airport
Baltimore/Washington International Thurgood Marshall Airport hosts about 25 airlines in total. We have terminal-specific check-in pages for the 0 listed below. Pick yours to see counters, bag-drop, and online check-in details.
No terminal-specific check-in pages for this airport yet. Browse the full airline directory for general check-in info.
How to check in for a flight from Baltimore/Washington International Thurgood Marshall Airport
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Check in online before you leave home
Most airlines open online check-in 24–48 hours before departure. It saves time at the airport and avoids airport-counter fees on low-cost carriers.
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Arrive at the right terminal
BWI has 1 terminal(s). Check your airline's terminal in the table above before you set off.
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Drop off checked baggage
Counters typically open 2 hours before departure and close 40 minutes before. Use self-service bag-drop kiosks to save time.
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Pass security
Liquids must be in a single transparent bag, max 100 ml each. Laptops and large electronics out of bags. Submit your security wait time below to help others.
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Reach your gate on time
Most airlines close the gate 20 minutes before departure. Allow 5–15 minutes to walk from security to the gate.
Tips for Baltimore/Washington International Thurgood Marshall Airport
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Cheaper than DCA/IAD often
BWI is often cheapest of three DC-area airports for flights to DC. Southwest dominates with no bag fees.
Popular destinations from Baltimore/Washington International Thurgood Marshall Airport
Frequently asked questions
Is BWI better than DCA for DC?
BWI is further from DC (60 km) but cheaper. MARC train to DC Union Station from BWI in 30 min. DCA is closer but more expensive flights.
Official sources
The check-in details on this page are sourced from each airline's website. For terminal layout, opening hours, and ground-side services, see the Baltimore/Washington International Thurgood Marshall Airport official site below.
- Wikipedia: Baltimore/Washington International Thurgood Marshall Airport — Editorial overview, history, statistics.
- FlightRadar24: BWI live data — Live flight arrivals, departures, and delays.
- travel.state.gov — Up-to-date entry requirements and security guidance for United States.