Great deals to Brussels!
Using Matrix Airfare Search by ITA Software, fares start at $407 (Basic Economy). Check dates with KLM Royal Dutch for a price of $355 (Basic Economy) or $555 (Regular Economy).
The $555 fare includes advance seat selection, a standard-sized carry-on, and one checked bag.
Delta / Air France / KLM Royal Dutch also offers a fare of $355, which is a Basic Economy option with certain restrictions:
- NO advance seat assignments allowed.
- NO checked bags included – $75 for the first bag, $100 for the second.
- NO changes permitted.
- NO cancellations allowed – cancelling after the 24-hour risk-free period loses the value of the Basic Economy fare.
- NO mileage earning opportunities.
- Many travel agencies do not display Air France / KLM Royal Dutch Basic Economy / Economy Light fares correctly.
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Brussels, Belgium – Photo: Kim Eriksson via Flickr, used under Creative Commons License (By 2.0)
Sample Travel Dates:
- Note: This is just ONE sample travel date. For more options, follow the “Fare Availability” and “How to Search for Availability” sections below.
Fare Availability:
- Available for travel in November on Sundays through Wednesdays and returning Tuesdays through Fridays. Limited availability. A Sunday stay is required. Book at least 14 days in advance.
- Keep in mind that while this fare is valid at the time of posting, it may no longer be available if this post is older than two days.
How to Search for Availability:
- This section is for searching availability only. For purchasing tickets, scroll to the “How to Buy” section below.
- Use Matrix Airfare Search by ITA Software with the following criteria:
- Origin: SEA
- Advanced Routing Code:
- Routing Codes: KL KL
- Extension Codes: f .. VLX02LBA ; maxconnect 300
- This instructs Matrix Airfare Search to find Basic Economy fares, allowing you to upgrade to regular economy on KLM.
- Destination: BRU
- Return Advanced Routing Code:
- Routing Codes: KL KL
- Extension Codes: f .. VLX02LBA ; maxconnect 300
- (Click on the Advanced Codes link to enter advanced routing codes)
- Select “See calendar of lowest fares”
- Duration “3-10” (this is just a sample; you can use any 7-day range like 3-10, 7-14, etc.)
- Refer to the Beginner’s Guide on How to Use Matrix by ITA Software.
- Learn How to Read Airfare Rules to your advantage.
- The Matrix Airfare Search page should look like below once all values are inputted.
- Tickets cannot be purchased directly through Matrix Airfare Search. For purchasing, refer to the “How to Buy” section below.
Fare Class:
Elite Qualifying Dollars:
Routing:
- SEA – JFK (New York) – BRU (Brussels) – JFK – SEA
Stopover:
Mileage:
KLM Royal Dutch is part of the SkyTeam Alliance and partners with Delta. Mileage earning with Delta is the following:
- Miles Flown: 12,138 miles or 2.9 cents per mile (Basic Economy) / 4.5 cents per mile (Regular Economy)
- Medallion Qualifying Dollars: $606
- Redeemable Miles: 3,034 miles
How to Buy:
- Book on KLM using the dates found on Matrix Airfare Search by ITA Software.
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Background Information:
- Visa: Not required for US Citizens. For other nationals, refer to the TIMATIC Visa Database.
- Currency: Euro (EUR). $1 USD = 0.87 EUR.
Credit Card Tips for International Destinations:
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* The Flight Deal may receive a commission for bookings made through accommodation, car rental, activities, or credit card affiliate links provided. Thank you for your support!
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The Flight Deal does not sell travel products or services. We simply provide information about third-party travel offers and link to their websites. The information posted by The Flight Deal is valid at the time of publication, but we cannot guarantee that these offers will remain available or unchanged. Please check their sites for the most current offers and conditions.












