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Due to the ongoing Covid-19 pandemic, we encourage you to get vaccinated for safer and more convenient travel.

A good sale to London.

The $640 fare includes advance seat assignment, normal size carry-on and one checked bag.

Delta / Air France / KLM Royal Dutch also have a $490 fare, but it is a Basic Economy fare with restrictions. Delta / Air France / KLM Royal Dutch International Basic Economy fares:

• DO NOT allow for advance seat assignment
• DO NOT include checked bags – they are $75 each way for the 1st bag and $100 for the 2nd
• DO NOT allow for changes
• DO NOT allow for cancellations – so if you cancel after the 24 hour risk free period, the Basic Economy version will have no value for future travel
• DO NOT allow for mileage earning
• Most online travel agencies are not displaying Air France / KLM Royal Dutch Basic Economy / Economy Light fares as such.

Sign up for our Real Time Newsletter to receive economy class deals for your city about an hour before they are even posted on our website and social media channels - all for about a nickel a day.

Interested in Business Class, First Class or Premium Economy deals? Signup for our Premium Newsletter for about a quarter a day.

Sample Travel Date:

• March 22nd – 29th, 2023

• This is just ONE SAMPLE travel date, for more availability, please follow the “Fare Availability” and “How to Search for Availability” instructions below

Fare Availability:

• Valid for travel from January 2023 – March 2023 for Sunday through Wednesday departures and Tuesday through Friday returns. A Sunday stay is required. Availability is limited. Must purchase at least 14 days in advance of departure

• Please note that while this fare is valid at time of posting, if this post is more than two days old, the fare is likely gone.

How to Search for Availability:

• This is just to search for availability. To buy your tickets, scroll down to “How to Buy” section of this post

• Use Matrix Airfare Search by ITA Software and use the following search criteria:
  • Origin: SEA
  • Origin Advanced Routing Code:
    • Routing Codes: DL
    • Extension Codes:
      • This is instructing Matrix Airfare Search by ITA Software to search for the Basic Economy fare. Use those dates on Delta and you will be presented with the option to upgrade to the regular economy fare.
  • Destination:  LHR
  • Return Advanced Routing Code:
    • Routing Codes: DL
    • Extension Codes:
  • (Click on Advanced Codes link to enable advanced routing code input)
  • Select “See calendar of lowest fares”
  • Duration “3-10” (This is just a sample, you can use any 7 day date range like 3-10, 7-14 etc)
• Beginner’s Guide on How to Use Matrix by ITA Software
• How to Read Airfare Rules and Use It to Your Advantage

• The Matrix Airfare Search by ITA Software search page should be like below when all values are inputted

 

• You cannot buy tickets using Matrix Airfare Search by ITA Software. To buy, follow our instructions in the “How to Buy” section below.

Fare Class:

• V

Elite Qualifying Dollars:

• $416

Routing:

• SEA – LHR (London) – SEA

Stopover:

• Not permitted
• How to Take Advantage of a Stopover

Mileage:

• Miles Flown: 9,566 miles
• Elite Qualifying Miles: 9,566 miles
• Redeemable Miles: 2,080 miles

How to Buy:

• Book on Delta with dates found on Matrix Airfare Search by ITA Software.

 

Accommodations

• TripAdvisor - One of the leading hotel meta-search engines. Find the lowest hotel prices from 200+ sites.

Car Rentals

• Rental Cars - One of the world’s leading car rental agencies. Includes all the major brands like Hertz, Avis, Budget, Dollar, Enterprise etc.

Activities and Tours

• Viator – The world's largest marketplace for destination activities and tours

Background Information:

• Visa: US Citizens – Not required. Other nationals, check the TIMATIC Visa Database
• Currency: British Pound (GBP). $1USD = 0.88 GBP

Tips for saving when using credit cards at international destinations:

• No Foreign Transaction Fee Credit Cards to save on international purchases
• Don’t get hit with Dynamic Currency Conversion
• Get your taxes refunded when shopping
• How to Avoid International Data Roaming Charges

For more of the latest cheap Seattle Flight Deals:

• Go to the The Seattle Flight Deals page

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* The Flight Deal will receive a commission if you use the accommodation, car rental, activities, or travel insurance affiliate links to make a booking or apply and is approved for a credit card using our link above. Thank you for your continuing support.

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The Flight Deal does not sell travel products or services. We provide you with information about third-party travel suppliers’ offers, and link you to their sites. The information posted by The Flight Deal is valid at the time of publication. However, we have no control over the suppliers, and we therefore do not warrant or guarantee that their offers will not change or become unavailable. Nor are we responsible for their products, services or site content. Please see their sites for their most up-to-date offer information and all applicable terms and conditions.