Title: Cheap flights from Oslo to Baltimore from $350 (OSL to BWI) - Expedia.com ![Baltimore featuring night scenes, skyline and a city](https://images.trvl-media.com/place/178235/efe97181-8af8-46b6-b917-0282b17a2b28.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178235/efe97181-8af8-46b6-b917-0282b17a2b28.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $350 Cheap Flights from Oslo (OSL) to Baltimore (BWI) [View $350 flight on Tue, Sep 22, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:OSL,to:BWI,departure:9/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:349.03&airProductToken=AQpoCjIIwoIBEgM3ODUYzlwg64kBKLm5mAMwz7qYAzhPQABYAWoFTk9CQUdyCU9MTjVDNUI0UAoyCMKCARIDMjI5GOuJASDBRSjsvJgDMNvAmAM4T0ABWAFqBU5PQkFHcglPTE41QzVCNFASCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ## Popular airlines from Gardermoen Airport (OSL) to Baltimore Washington Intl. Airport (BWI) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_FI.svg) Icelandair [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FI"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AY.svg) Finnair [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EI.svg) Aer Lingus [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SK.svg) SAS [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:BWI,departure:4/5/2026TANYT&leg2=from:BWI,to:OSL,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SK"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Oslo to Baltimore (OSL-BWI) Prices were available within the past 7 days and start at $350 for one-way flights and $471 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Fri, May 15 - Thu, May 28 OSL Oslo BWI Baltimore $471 Roundtrip found 13 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:5/15/2026TANYT&leg2=from:BWI,to:OSL,departure:5/28/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:470.03&airProductToken=AQpmCjEIwoIBEgM3ODUYzlwg64kBKP6CjQMwlISNAzhPQABYAWoFTk9CQUdyCE9MTjBFMkJXCjEIwoIBEgMyMjkY64kBIMFFKL2HjQMwrIuNAzhPQAFYAWoFTk9CQUdyCE9MTjBFMkJXCmYKMQjCggESAzIyOBjBRSDriQEoup6OAzDyoY4DOE9AAFgBagVOT0JBR3IIT0tOMEUyQlcKMQjCggESAzc4NBjriQEgzlwogaeOAzD-p44DOE9AAVgBagVOT0JBR3IIT0tOMEUyQlcSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Mon, Apr 20 - Tue, Apr 28 OSL Oslo BWI Baltimore $525 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:4/20/2026TANYT&leg2=from:BWI,to:OSL,departure:4/28/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:524.63&airProductToken=AQpkCjAIxpIBEgMzMTkYzlwgiikoxuyKAzD17YoDOE5AAFgBagVMSUdIVHIITlUyTU5PTFQKMAjGkgESAzY0MxiKKSDBRSj87ooDMP3xigM4TkABWAFqBUxJR0hUcghOVTJNTk9MVApkCjAIxpIBEgM2NDIYwUUgiikovsyLAzChz4sDOE5AAFgBagVMSUdIVHIITlUyTU5PTFQKMAjGkgESAzMxOBiKKSDOXCj2z4sDMJvRiwM4TkABWAFqBUxJR0hUcghOVTJNTk9MVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, Mar 31 - Sat, Apr 4 OSL Oslo BWI Baltimore $528 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:3/31/2026TANYT&leg2=from:BWI,to:OSL,departure:4/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:527.33&airProductToken=AQpkCjAIxpIBEgMzMjMYzlwgiiko5oyJAzCQjokDOFhAAFgBagVMSUdIVHIIWFUyTU5PTFQKMAjGkgESAzY0MRiKKSDBRSimj4kDMKeSiQM4WEABWAFqBUxJR0hUcghYVTJNTk9MVApkCjAIxpIBEgM2NDIYwUUgiikovr6JAzChwYkDOFhAAFgBagVMSUdIVHIIWFUyTU5PTFQKMAjGkgESAzMxOBiKKSDOXCj2wYkDMJvDiQM4WEABWAFqBUxJR0hUcghYVTJNTk9MVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, Mar 31 - Sat, Apr 4 OSL Oslo BWI Baltimore $529 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:3/31/2026TANYT&leg2=from:BWI,to:OSL,departure:4/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:528.93&airProductToken=AQpkCjAIxpIBEgMzMjMYzlwgiiko5oyJAzCQjokDOFhAAFgBagVMSUdIVHIIWFUyTU5PTFQKMAjGkgESAzY0MxiKKSDBRSicmYkDMJ2ciQM4WEABWAFqBUxJR0hUcghYVTJNTk9MVApkCjAIxpIBEgM2NDIYwUUgiikovr6JAzChwYkDOFhAAFgBagVMSUdIVHIIWFUyTU5PTFQKMAjGkgESAzMxOBiKKSDOXCj2wYkDMJvDiQM4WEABWAFqBUxJR0hUcghYVTJNTk9MVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Sun, Apr 19 - Sat, May 2 OSL Oslo BWI Baltimore $560 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:4/19/2026TANYT&leg2=from:BWI,to:OSL,departure:5/2/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:559.73&airProductToken=AQpkCjAIxpIBEgMzMjMYzlwgiikoxuKKAzDw44oDOE5AAFgBagVMSUdIVHIITlUyTU5PTFQKMAjGkgESAzY0MxiKKSDBRSj87ooDMP3xigM4TkABWAFqBUxJR0hUcghOVTJNTk9MVApkCjAIxpIBEgM2NDIYwUUgiikovvmLAzCh_IsDOE9AAFgBagVMSUdIVHIIT0oyUU5PTFQKMAjGkgESAzMxOBiKKSDOXCj2_IsDMJv-iwM4T0ABWAFqBUxJR0hUcghPSjJRTk9MVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Sun, Jan 31 - Tue, Feb 9 OSL Oslo BWI Baltimore $562 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:1/31/2027TANYT&leg2=from:BWI,to:OSL,departure:2/9/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:561.83&airProductToken=AQpkCjAIxpIBEgMzMTkYzlwgiikomv6jAzDY_6MDOE9AAFgBagVMSUdIVHIIT0oyUU5PTFQKMAjGkgESAzY0MxiKKSDBRSi8gKQDMMyDpAM4T0ABWAFqBUxJR0hUcghPSjJRTk9MVApkCjAIxpIBEgM2NDIYwUUgiikoqOmkAzCG7KQDOE9AAFgBagVMSUdIVHIIT0oyUU5PTFQKMAjGkgESAzMxOBiKKSDOXCjW7KQDMPvtpAM4T0ABWAFqBUxJR0hUcghPSjJRTk9MVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Sun, Jan 31 - Tue, Feb 9 OSL Oslo BWI Baltimore $564 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:1/31/2027TANYT&leg2=from:BWI,to:OSL,departure:2/9/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:563.43&airProductToken=AQpkCjAIxpIBEgMzMjUYzlwgiikojoKkAzDMg6QDOE9AAFgBagVMSUdIVHIIT0oyUU5PTFQKMAjGkgESAzY0MxiKKSDBRSjci6QDMOyOpAM4T0ABWAFqBUxJR0hUcghPSjJRTk9MVApkCjAIxpIBEgM2NDIYwUUgiikoqOmkAzCG7KQDOE9AAFgBagVMSUdIVHIIT0oyUU5PTFQKMAjGkgESAzMxOBiKKSDOXCjW7KQDMPvtpAM4T0ABWAFqBUxJR0hUcghPSjJRTk9MVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Thu, Oct 15 - Mon, Oct 19 OSL Oslo BWI Baltimore $737 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:10/15/2026TANYT&leg2=from:BWI,to:OSL,departure:10/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:736.63&airProductToken=AQqqAQozCNOWARIEMTQ3NxjOXCDiOyjQwZoDMJbCmgM4TEAAWAFqCFNUQU5EQVJEcgdMS05PNkVTCjII05YBEgM5MjkY4jsg4Fwol8qaAzDRzpoDOExAAVgBaghTVEFOREFSRHIHTEtOTzZFUwo_CNOWARIEMzIxMRjgXCDBRSiy0JoDMJ3RmgM4TEABWAFqCFNUQU5EQVJEcgdMS05PNkVTegoIxJgBEgQyNjcwCqsBCkAI05YBEgQzNzc5GMFFIMGTASi87poDMJ3vmgM4TEAAWAFqCFNUQU5EQVJEcgdMS05PNkVTegoIxJgBEgQ1NjY4CjMI05YBEgM5MjgYwZMBIOI7KNTwmgMwgvSaAzhMQAFYAWoIU1RBTkRBUkRyB0xLTk82RVMKMgjTlgESAzQ2MhjiOyDOXCiW-ZoDMNz5mgM4TEABWAFqCFNUQU5EQVJEcgdMS05PNkVTEgoIARABGAEqAlNLGAEiBAgBEAEoAigDKAQwAQ) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Mon, Apr 20 - Tue, Apr 28 OSL Oslo BWI Baltimore $779 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:4/20/2026TANYT&leg2=from:BWI,to:OSL,departure:4/28/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:778.53&airProductToken=AQquAQozCMGyARIDOTE4GM5cIIdZKNbvigMwq_CKAzhPQABYAWoIRUNMQVNTSUNyCE9MTjBUMk00CjUIwbIBEgQxMzM5GIdZIOuJASj--YoDMLz7igM4T0ABWAFqCEVDTEFTU0lDcghPTE4wVDJNNApACMGyARIENTQyORjriQEgwUUo3YSLAzDMiIsDOE9AAVgBaghFQ0xBU1NJQ3IIT0xOMFQyTTR6CQjCggESAzIyOQquAQpACMGyARIENTQyOBjBRSDriQEo-syLAzCy0IsDOE9AAFgBaghFQ0xBU1NJQ3IIT0xOMFQyTTR6CQjCggESAzIyOAo1CMGyARIEMTMzOBjriQEgh1koptSLAzDQ1YsDOE9AAVgBaghFQ0xBU1NJQ3IIT0xOMFQyTTQKMwjBsgESAzkxMRiHWSDOXCjJ2YsDMJ7aiwM4T0ABWAFqCEVDTEFTU0lDcghPTE4wVDJNNBIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Thu, Jul 16 - Mon, Jul 27 OSL Oslo BWI Baltimore $835 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OSL,to:BWI,departure:7/16/2026TANYT&leg2=from:BWI,to:OSL,departure:7/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:834.33&airProductToken=AQqnAQo9CMGCARIENjY1MBjOXCDriQEoubySAzDPvZIDOFNAAFgBagVCQVNJQ3IIT0hONEM4QjR6CQjCggESAzc4NQoyCMGCARIDNzM1GOuJASDimgEoqMCSAzDJxJIDOEJAAVgBagVCQVNJQ3IIT0hONEM4QjQKMgjBggESBDEzMTgY4poBIMFFKKXGkgMw_saSAzhCQAFYAWoFQkFTSUNyCE9ITjRDOEI0Cq4BCjEIwYIBEgQ0NDE0GMFFIK4cKNW-kwMw6b-TAzhCQABYAWoFQkFTSUNyCE5LTjdDOEJXCjsIwYIBEgQ4OTg4GK4cIIdZKPbBkwMwg8aTAzhOQAFYAWoFQkFTSUNyCE5LTjdDOEJXeggIwbIBEgIxMAo8CMGCARIEODk5MBiHWSDOXCj2xpMDMMvHkwM4TkABWAFqBUJBU0lDcghOS043QzhCV3oJCMGyARIDOTE1EgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ## Alternative airports near Baltimore Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:DCA,departure:4/5/2026TANYT&leg2=from:DCA,to:OSL,departure:4/9/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) DCA Ronald Reagan Washington National Cheapest 57 min [Flights from $1,911 ](https://www.expedia.com/Flights-Search?leg1=from:OSL,to:DCA,departure:4/5/2026TANYT&leg2=from:DCA,to:OSL,departure:4/9/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) cost? ### What is the cheapest month to fly from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### Which airlines fly direct from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### What is the cheapest airline that flies from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### How do I find cheap flights from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### What is the best time to fly from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### What is the earliest flight from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### What are the most popular departure times for flights from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### How long does it take to fly from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ### Can you fly business or first class from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? > - British Airways > - SAS > - Icelandair > - Finnair ### How do I earn miles on a Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) flight with Expedia? ### What airports do you fly into for Baltimore from Gardermoen (OSL)? ### Is it cheaper to buy a plane ticket from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) at the last minute? ### Is it cheaper to book a Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) flight and hotel package? ### Can I cancel or change the date of my flight from Oslo (OSL-Gardermoen) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)? ## Travel information | Origin airport | Gardermoen | | ------------------- | ---------------------------------------------------------------------------------------- | | Destination airport | Baltimore Washington Intl. Thurgood Marshall | | Airlines serving | Aer Lingus, British Airways, Finnair, Icelandair, Scandinavian Airlines, Virgin Atlantic | | Roundtrip price | $470 | | Distance | 3849 mi | ## Book with confidence # Oslo to Baltimore Flights The cheapest times to fly from Oslo 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 Oslo to Baltimore are during the month of May. You can find some of the cheapest flights from Oslo to Baltimore with Expedia's search tool and vast selection of airlines. The best time to book a flight from Oslo to Baltimore Sunday is one of the best days to book for cheap flights from Oslo 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 Oslo 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 Oslo to Baltimore in 2026\. You can also book with separate airlines for your outbound and return journeys, from $350 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 Oslo 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](https://www.expedia.com/package-deals). Bundling together your Oslo 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\. 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