Best Flights starting from $499
from$499economy
Seattle (Any)
Mon, Jun 15
One-way
London (LHR)
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from$533economy
Seattle (Any)
Tue, Jun 16
One-way
London (LHR)
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from$545economy
Seattle (Any)
Sat, Jun 20
One-way
London (LHR)
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from$545economy
Seattle (Any)
Sun, Jun 21
One-way
London (LHR)
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from$614economy
Seattle (Any)
Wed, Jun 17
One-way
London (LHR)
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from$632economy
Seattle (Any)
Thu, Jun 18
One-way
London (LHR)
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from$632economy
Seattle (Any)
Fri, Jun 19
One-way
London (LHR)
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Other Destinations
Seattle (Any) to Charlotte (CLT) in June from $120
From $120
Seattle (Any) to Orlando (MCO) in June from $246
From $246
Seattle (Any) to Anchorage (Any) in June from $250
From $250
Seattle (Any) to Miami (Any) in June from $290
From $290
Seattle (Any) to Washington, D.C. (IAD) in June from $328
From $328
Seattle (Any) to Anchorage (Any) in June from $340
From $340
Flights from Other Cities
Krakow (KRK) to London (LHR) in June from $93
From $93
Tel Aviv (TLV) to London (LHR) in June from $405
From $405
Madison (MSN) to London (LHR) in June from $422
From $422
Los Angeles (Any) to London (LHR) in June from $463
From $463
Boston (BOS) to London (LHR) in June from $619
From $619
Toronto (YYZ) to London (LHR) in June from $687
From $687
✈️ Flight Guide: Seattle (Any) → London (LHR)
Complete travel information for your June journey
Departing from Seattle (Any) FAQs
To find cheap economy flights from London Heathrow (LHR) in September, search 6–10 weeks in advance, use flexible date tools, and compare budget carriers and legacy airlines. Consider mid-week departures and early morning flights to lower fares, and sign up for fare alerts to capture flash sales. Use airport and destination modifiers like "LHR to Barcelona cheap economy" for more targeted results.
For international economy departures from London Heathrow (LHR), arrive at least 3 hours before scheduled departure during peak months (June–August and December). For European flights, 2–2.5 hours is often sufficient, but always check your airline's recommended check-in time and allow extra time for security and queues. Use online check-in where available to speed up your process.
December sees higher passenger volumes and weather-related disruptions, so departures from London Heathrow (LHR) can experience more delays than other months. Build at least an extra hour of buffer time and monitor airline notifications and Heathrow's live departure boards. Consider travel insurance that covers delays and check alternative flight options if you must arrive on a specific date.
Heathrow (LHR) offers multiple transport options including Heathrow Express and Elizabeth Line to central London, shuttle and bus services to Windsor and Reading, and National Express coaches and rail connections for Oxford. Pre-booked airport transfer shuttles and private taxis are available for direct service to nearby towns, making it easy to reach local destinations like Windsor, Slough, and Oxford.
London Heathrow (LHR) is a major hub serving long-haul destinations like New York, Dubai, Toronto, Hong Kong, and Singapore with frequent daily services year-round. During peak season (July–August and December), airlines often add extra flights and larger aircraft to meet demand, so booking early can secure better economy fares and seat options.
Ticket changeability depends on the fare rules of your airline and ticket class; many basic economy fares sold at LHR are non-changeable or incur fees. If you find a cheaper fare for a different month, contact your airline's customer service or use the airline website to assess change or rebooking costs, and consider upgrading to a more flexible fare when purchasing if future changes are likely.
Arriving at London (LHR) FAQs
From London Heathrow (LHR) in April, budget-friendly economy destinations with frequent cheap arrivals include Barcelona, Lisbon, Madrid, and Dublin. Use mid-week flights and low-cost carriers where available, and compare connecting itineraries for additional savings. Booking several weeks in advance usually secures the best economy fares.
Yes — short-haul economy arrivals into European cities are generally cheaper in January compared with long-haul routes; airlines often lower prices after the holiday peak. January is a good month to find low-cost arrivals to cities like Prague, Budapest, and Marrakech, especially when booking flexible mid-week dates.
To secure the cheapest economy arrival fares, compare multiple search engines, set fare alerts, travel mid-week, and remain flexible with exact dates and airports. Consider nearby alternative airports and connecting flights to reduce cost, and clear cookies or use incognito browsing to avoid inflated retargeted fares. Book when you see a meaningful drop in price, especially during sales.
August arrivals in economy class are often crowded at popular destinations due to peak summer travel; expect longer lines at immigration and baggage claim. To streamline arrival, enroll in fast-track immigration where available, pack carry-on only for quicker exit, and allow extra time for transfers between terminals or onward transport.
Holiday weekends such as Easter and Christmas typically produce higher fares for arrivals in economy class, not cheaper ones; booking very early or choosing off-peak days around the holiday can help reduce costs. Consider traveling outside core holiday dates or using flexible-search tools to identify the cheapest nearby arrival dates.
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Events and Festivals — Travel Impact on LHR Economy Fares
Major events like Wimbledon (July), London Fashion Week (September), and New Year's holidays spike demand and raise economy fares at London Heathrow (LHR). Similarly, international festivals (La Tomatina in August, Oktoberfest in late September/October) affect arrivals pricing to specific cities. For the cheapest economy fares, travel outside peak event dates or book months in advance and use fare tracking. CTA: Check event calendars and compare economy fares from London Heathrow (LHR) now to avoid premium pricing during major festivals.
Best Time to Fly — When to Book Cheap Economy Flights from LHR
The best time to fly cheaply from London Heathrow (LHR) in economy class is typically during shoulder seasons: late September–October and February–March. Book short-haul economy flights 6–10 weeks ahead and long-haul 2–6 months in advance. Mid-week departures (Tuesdays, Wednesdays) and off-peak hours (red-eye or early morning) often yield lower prices. Use year-round LSI phrases like 'shoulder season travel', 'mid-week cheap flights', and 'book in advance' when searching. CTA: Use our monthly guide to determine the best time to fly from London Heathrow (LHR) and book cheap economy fares.
Direct vs Connecting Flights — Choose Economy Options from LHR
Direct flights from London Heathrow (LHR) prioritize convenience and shorter total travel time, while connecting economy itineraries often reduce ticket cost. During peak months, direct flights fill quickly and become more expensive, so connecting options are a practical way to find cheap economy fares. Ensure adequate connection times (allow at least 90–120 minutes for international transfers at busy airports) and check baggage transfer rules. Use search terms like 'LHR to [destination] cheapest connecting flights' to surface low-cost options. CTA: Compare direct and connecting economy itineraries from London Heathrow (LHR) to balance time and savings.
Airline Comparison — Economy Carriers Serving London Heathrow (LHR)
At London Heathrow (LHR), legacy carriers like British Airways and Virgin Atlantic provide frequent direct long-haul services with higher base fares but included amenities; low-cost and hybrid carriers may offer cheaper economy prices to European destinations but charge extras for baggage and seat selection. For the cheapest economy experience, compare total trip cost (fare + bags + seats) across carriers and review monthly promotions—budget carriers occasionally add seasonal routes in May–September. Use search queries like 'BA vs easyJet LHR economy price' to compare and always factor in ancillary fees. CTA: Compare airlines serving London Heathrow (LHR) now to find the cheapest economy option for your travel dates.
Seasonal Travel Tips — Save on Economy Flights from LHR All Year
Winter: Book early for holiday travel windows, expect weather-related delays, and prioritize flexible economy fares or travel insurance. Spring: Use shoulder-season pricing for cheap economy routes to Europe; book 6–10 weeks ahead. Summer: Peak prices—secure economy seats 2–4 months in advance and consider red-eye or connecting flights for savings. Autumn: Another shoulder-season sweet spot—look for discounted fares to cultural cities and reduced crowding. Across all seasons, pack light to avoid baggage fees, sign up for airline newsletters, and use flexible-date search tools to find the cheapest economy flights from London Heathrow (LHR). CTA: Apply these seasonal tips now to book the cheapest economy fare from London Heathrow (LHR).
Flight Time and Schedules — LHR Departures & Economy Arrival Windows
Flight time from London Heathrow (LHR) varies by destination: London to Paris is ~1h15m, to Madrid ~2h15m, to New York ~7–8h, and to Dubai ~7h. Schedules tighten in peak months (June–August, December) with more direct flights and expanded frequencies; off-peak months (January, February, November) generally have fewer daily services and lower fares. For economy travellers, consider departure times (early morning or late night) that often have lower demand and cheaper fares. Monitor airlines' published timetables and use 'LHR flight times to [city]' as a search phrase for precise schedule planning. CTA: Check real-time schedules for your travel month and book the economy slot that best fits your plans.
Cheap Flights — How to Find Lowest Economy Fares from LHR
To find the cheapest economy flights from London Heathrow (LHR), set flexible date searches, enable fare alerts, and compare budget airlines with legacy carriers. Consider traveling mid-week, using alternate nearby airports, and booking 6–12 weeks out for short-haul or 2–6 months for long-haul flyers. Use location-based modifiers (e.g., 'cheap flights LHR to Barcelona economy') and LSI terms like 'budget travel', 'fare drops', and 'last-minute deals'. Book once you see a meaningful dip and use price-tracking tools to spot volatility. CTA: Start a fare alert now to capture the best cheap economy flights from London Heathrow (LHR).