Title: $424 Cheap flights from Baltimore to Oulu (BWI to OUL) - Expedia.com

![idyllic Baltic Sea panorama landscape with red cottages on the shoreline under a blue sky in autumn](https://images.trvl-media.com/place/2717/fcc272f3-1ff6-40fd-aafa-bce5818077ef.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

![](https://images.trvl-media.com/place/2717/fcc272f3-1ff6-40fd-aafa-bce5818077ef.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

# $424 Cheap Flights from Baltimore (BWI) to Oulu (OUL)

[View $424 flight on Fri, Oct 23, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:423.10&airProductToken=AQqXAQowCMGCARIDODg5GMFFIK4cKICemwMwjZ-bAzhPQABYAWoFTk9CQUdyCE9MVzlENEJWCjEIwoIBEgQ2MDkwGK4cIIdZKPafmwMwg6SbAzhPQAFYAWoFTk9CQUdyCE9MVzlENEJWCjAIwbIBEgM0MzMYh1kgjl0ou6ybAzCBrZsDOE9AAVgBagVOT0JBR3IIT0xXOUQ0QlYSDAgBEAEYASoCQkEyABgBIgQIARABKAIoAygEMA0) 

## Popular airlines from Baltimore Washington Intl. Airport (BWI) to Oulu (OUL)

- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg)  
American Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg)  
United  
[](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg)  
Southwest Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}])
- ![](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:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&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_F9.svg)  
Frontier Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg)  
JetBlue Airways  
[](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg)  
Alaska Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:BWI,to:OUL,departure:3/28/2026TANYT&leg2=from:OUL,to:BWI,departure:4/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}])

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## Cheap Flights from Baltimore to Oulu (BWI-OUL)

Prices were available within the past 7 days and start at $424 for one-way flights and $834 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$834

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:833.53&airProductToken=AQqYAQoxCMGCARIEMzQwMhjBRSCuHCjDm5sDMMicmwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoxCMKCARIENjA5MBiuHCCHWSj2n5sDMIOkmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgowCMGyARIDNDMzGIdZII5dKLusmwMwga2bAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCpoBCjAIwbIBEgM0MzIYjl0gh1ko7-SbAzCr5ZsDOE9AAFgBagVOT0JBR3IIT0xYOUMxQlYKMgjCggESBDYwNTMYh1kgo7EBKJbnmwMwluybAzhPQAFYAWoFTk9CQUdyCE9MWDlDMUJWCjIIwYIBEgQyMjUxGKOxASDBRSii7ZsDMNHumwM4T0ABWAFqBU5PQkFHcghPTFg5QzFCVhIMCAEQARgBKgJCQTIAGAEiBAgBEAEoAigDKAQwDQ)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$840

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:839.72&airProductToken=AQqYAQoxCMGCARIENDI1MRjBRSCuHCimmJsDMK6ZmwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoxCMKCARIENjA5MBiuHCCHWSj2n5sDMIOkmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgowCMGyARIDNDMzGIdZII5dKLusmwMwga2bAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCpoBCjAIwbIBEgM0MzIYjl0gh1ko7-SbAzCr5ZsDOE9AAFgBagVOT0JBR3IIT0xYOUMxQlYKMgjCggESBDYwNTMYh1kgo7EBKJbnmwMwluybAzhPQAFYAWoFTk9CQUdyCE9MWDlDMUJWCjIIwYIBEgQyMjUxGKOxASDBRSii7ZsDMNHumwM4T0ABWAFqBU5PQkFHcghPTFg5QzFCVhIMCAEQARgBKgJCQTIAGAEiBAgBEAEoAigDKAQwDQ)

![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$849

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:848.53&airProductToken=AQqZAQoxCMKCARIDMjI4GMFFIOuJASi6n5sDMPKimwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoyCMGyARIEMTMzNhjriQEgh1ko7qWbAzCYp5sDOFFAAVgBagVOT0JBR3IIUUxOMEQxQlYKMAjBsgESAzQzMxiHWSCOXSi7rJsDMIGtmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgqaAQowCMGyARIDNDMyGI5dIIdZKO_kmwMwq-WbAzhPQABYAWoFTk9CQUdyCE9MWDlDMUJWCjIIwoIBEgQ2MDUzGIdZIKOxASiW55sDMJbsmwM4T0ABWAFqBU5PQkFHcghPTFg5QzFCVgoyCMGCARIEMjI1MRijsQEgwUUoou2bAzDR7psDOE9AAVgBagVOT0JBR3IIT0xYOUMxQlYSDAgBEAEYASoCQkEyABgBIgQIARABKAIoAygEMA0)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$850

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:849.53&airProductToken=AQqaAQoyCMGCARIEMTQwMxjBRSCjsQEox5ibAzCbmpsDOFFAAFgBagVOT0JBR3IIUUxOMEQxQlYKMgjCggESBDYwNTQYo7EBIIdZKN6dmwMwsaKbAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCjAIwbIBEgM0MzMYh1kgjl0ou6ybAzCBrZsDOFFAAVgBagVOT0JBR3IIUUxOMEQxQlYKmgEKMAjBsgESAzQzMhiOXSCHWSjv5JsDMKvlmwM4T0AAWAFqBU5PQkFHcghPTFg5QzFCVgoyCMKCARIENjA1MxiHWSCjsQEoluebAzCW7JsDOE9AAVgBagVOT0JBR3IIT0xYOUMxQlYKMgjBggESBDIyNTEYo7EBIMFFKKLtmwMw0e6bAzhPQAFYAWoFTk9CQUdyCE9MWDlDMUJWEgwIARABGAEqAkJBMgAYASIECAEQASgCKAMoBDAN)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$851

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:850.53&airProductToken=AQqYAQoxCMGCARIEMzQwMhjBRSCuHCjDm5sDMMicmwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoxCMKCARIENjA5MBiuHCCHWSj2n5sDMIOkmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgowCMGyARIDNDMzGIdZII5dKLusmwMwga2bAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCpsBCjEIwoIBEgQ2MDE5GI5dIIdZKPfjmwMws-SbAzhRQABYAWoFTk9CQUdyCFFMWDhDMUJWCjIIwoIBEgQ2MDUzGIdZIKOxASiW55sDMJbsmwM4UUABWAFqBU5PQkFHcghRTFg4QzFCVgoyCMGCARIEMjI1MRijsQEgwUUoou2bAzDR7psDOFFAAVgBagVOT0JBR3IIUUxYOEMxQlYSDAgBEAEYASoCQkEyABgBIgQIARABKAIoAygEMA0)

![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$855

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:854.94&airProductToken=AQqZAQoxCMKCARIDMjI4GMFFIOuJASi6n5sDMPKimwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoyCMGyARIEMTMzOBjriQEgh1ko5qabAzCQqJsDOFFAAVgBagVOT0JBR3IIUUxOMEQxQlYKMAjBsgESAzQzMxiHWSCOXSi7rJsDMIGtmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgqaAQowCMGyARIDNDMyGI5dIIdZKO_kmwMwq-WbAzhPQABYAWoFTk9CQUdyCE9MWDlDMUJWCjIIwoIBEgQ2MDUzGIdZIKOxASiW55sDMJbsmwM4T0ABWAFqBU5PQkFHcghPTFg5QzFCVgoyCMGCARIEMjY2ORijsQEgwUUo1PObAzCN9ZsDOE9AAVgBagVOT0JBR3IIT0xYOUMxQlYSDAgBEAEYASoCQkEyABgBIgQIARABKAIoAygEMA0)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$857

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:856.72&airProductToken=AQqYAQoxCMGCARIENDI1MRjBRSCuHCimmJsDMK6ZmwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoxCMKCARIENjA5MBiuHCCHWSj2n5sDMIOkmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgowCMGyARIDNDMzGIdZII5dKLusmwMwga2bAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCpsBCjEIwoIBEgQ2MDE5GI5dIIdZKPfjmwMws-SbAzhRQABYAWoFTk9CQUdyCFFMWDhDMUJWCjIIwoIBEgQ2MDUzGIdZIKOxASiW55sDMJbsmwM4UUABWAFqBU5PQkFHcghRTFg4QzFCVgoyCMGCARIEMjI1MRijsQEgwUUoou2bAzDR7psDOFFAAVgBagVOT0JBR3IIUUxYOEMxQlYSDAgBEAEYASoCQkEyABgBIgQIARABKAIoAygEMA0)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$866

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:865.53&airProductToken=AQqaAQoyCMGCARIEMTQwMxjBRSCjsQEox5ibAzCbmpsDOFFAAFgBagVOT0JBR3IIUUxOMEQxQlYKMgjCggESBDYwNTQYo7EBIIdZKN6dmwMwsaKbAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCjAIwbIBEgM0MzMYh1kgjl0ou6ybAzCBrZsDOFFAAVgBagVOT0JBR3IIUUxOMEQxQlYKmwEKMQjCggESBDYwMTkYjl0gh1ko9-ObAzCz5JsDOFFAAFgBagVOT0JBR3IIUUxYOEMxQlYKMgjCggESBDYwNTMYh1kgo7EBKJbnmwMwluybAzhRQAFYAWoFTk9CQUdyCFFMWDhDMUJWCjIIwYIBEgQyMjUxGKOxASDBRSii7ZsDMNHumwM4UUABWAFqBU5PQkFHcghRTFg4QzFCVhIMCAEQARgBKgJCQTIAGAEiBAgBEAEoAigDKAQwDQ)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$872

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:871.72&airProductToken=AQqYAQoxCMGCARIENDI1MRjBRSCuHCimmJsDMK6ZmwM4UUAAWAFqBU5PQkFHcghRTE4wRDFCVgoxCMKCARIENjA5MBiuHCCHWSj2n5sDMIOkmwM4UUABWAFqBU5PQkFHcghRTE4wRDFCVgowCMGyARIDNDMzGIdZII5dKLusmwMwga2bAzhRQAFYAWoFTk9CQUdyCFFMTjBEMUJWCpoBCjAIwbIBEgM0MzQYjl0gh1koyeWbAzCF5psDOFFAAFgBagVOT0JBR3IIUUxYOEMxQlYKMgjCggESBDYwNTMYh1kgo7EBKJbnmwMwluybAzhRQAFYAWoFTk9CQUdyCFFMWDhDMUJWCjIIwYIBEgQyMjUxGKOxASDBRSii7ZsDMNHumwM4UUABWAFqBU5PQkFHcghRTFg4QzFCVhIMCAEQARgBKgJCQTIAGAEiBAgBEAEoAigDKAQwDQ)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Oct 23 - Fri, Oct 30

BWI

Baltimore

OUL

Oulu

$879

Roundtrip

found 1 day ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BWI,to:OUL,departure:10/23/2026TANYT&leg2=from:OUL,to:BWI,departure:10/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:878.72&airProductToken=AQqaAQoyCMGCARIEMTIxMxjBRSCjsQEouZ6bAzCKoJsDOE9AAFgBagVOT0JBR3IIT0xXOUQ5QlYKMgjCggESBDYwNTQYo7EBIIdZKP6omwMw0a2bAzhPQAFYAWoFTk9CQUdyCE9MVzlEOUJWCjAIwbIBEgM0MzEYh1kgjl0ogbebAzDHt5sDOE9AAVgBagVOT0JBR3IIT0xXOUQ5QlYKmgEKMAjBsgESAzQzMhiOXSCHWSjv5JsDMKvlmwM4T0AAWAFqBU5PQkFHcghPTFg5RDlCVgoyCMKCARIENjA1MxiHWSCjsQEoluebAzCW7JsDOE9AAVgBagVOT0JBR3IIT0xYOUQ5QlYKMgjBggESBDIyNTEYo7EBIMFFKKLtmwMw0e6bAzhPQAFYAWoFTk9CQUdyCE9MWDlEOUJWEgwIARABGAEqAkJBMgAYASIECAEQASgCKAMoBDAN)

![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh)

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## Frequently asked questions

### How much does a flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL) cost?

### What is the cheapest month to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### Which airlines fly direct from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### What is the cheapest airline that flies from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### How do I find cheap flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### What is the best time to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### What is the earliest flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### How long does it take to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### Can you fly business or first class from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

### How do I earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL) flight with Expedia?

### Is it cheaper to buy a plane ticket from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL) at the last minute?

### Is it cheaper to book a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL) flight and hotel package?

### Can I cancel or change the date of my flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Oulu (OUL)?

## Travel information

| Origin airport      | Baltimore Washington Intl. Thurgood Marshall |
| ------------------- | -------------------------------------------- |
| Destination airport | Oulu                                         |
| Roundtrip price     | $834                                         |
| Distance            | 4128 mi                                      |

## Book with confidence

# Baltimore to Oulu Flights

The cheapest times to fly from Baltimore to Oulu

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 Baltimore to Oulu are during the month of October. You can find some of the cheapest flights from Baltimore to Oulu with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Baltimore to Oulu

Sunday is one of the best days to book for cheap flights from Baltimore to Oulu: 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 Baltimore to Oulu

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 Baltimore to Oulu in 2026\. You can also book with separate airlines for your outbound and return journeys, from $424 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 Baltimore to Oulu 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 Baltimore to Oulu 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.

\*Flight schedules are subject to change.

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