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Flights from Portland, Maine to London

Tower bridge and Big Ben in London

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Current requirements for travelling from Portland to London

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Expert tip

If you're flying long-haul and want a slice of luxury on a budget, choose a mixed-class airfare. This means you can fly economy on one leg and premium economy or business on the other - a great option for an overnight flight.

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*Travel restrictions & conditions apply. Review any specific conditions stated and our general terms at Terms and Conditions. Prices & taxes are correct as at the date of publication & are subject to availability and change without notice. Prices quoted are on sale until the dates specified unless otherwise stated or sold out prior. Prices are per person.

^Pricing based on available fares returned from recent searches conducted, with a departure date of between 7 to 28 days from search/booking. Pricing may not be available for your preferred travel time. Use search function to confirm fares available for your preferred travel dates and times.

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