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Washington, Virginia · United States

Cheap flights from Washington

IAD — Dulles. Most long-haul out of Washington connects, which widens the range of prices you'll see on any given day — and widens what counts as a real drop. Every price below is in USD, because that is the currency you'd be paying in.

Check a fare from IAD

Modelled route history built for this release — not a live fare feed. The method is real and the numbers are internally consistent; the ingestion that replaces them is Phase 0 of the build.

2 of these 12 routes hit a fare worth telling you about in the last 90 days.

Our bar is 40% under a route’s own 90-day median — not off a made-up “normal” price, and not off what the airline says it usually charges. The sharpest here was Barcelona at $380 against a usual $741, 49% under.

  1. Barcelona

    Spain

    Best Oct – May

    Check a price on this route
    Usually
    $741
    Model threshold
    $445
    Best in 90 days
    $380
    3 days cleared the alert bar

  2. San José

    Costa Rica

    Best Sept – Nov

    Check a price on this route
    Usually
    $754
    Model threshold
    $452
    Best in 90 days
    $432
    1 day cleared the alert bar

  3. Rome

    Italy

    Best Oct – Mar

    Check a price on this route
    Usually
    $735
    Model threshold
    $441
    Best in 90 days
    $476
    No fare cleared the alert bar in this window

  4. Mexico City

    Mexico

    Best Oct – Feb

    Check a price on this route
    Usually
    $613
    Model threshold
    $368
    Best in 90 days
    $400
    No fare cleared the alert bar in this window

  5. Amsterdam

    Netherlands

    Best Sept – Apr

    Check a price on this route
    Usually
    $783
    Model threshold
    $470
    Best in 90 days
    $512
    No fare cleared the alert bar in this window

  6. Istanbul

    Türkiye

    Best Nov – Mar

    Check a price on this route
    Usually
    $683
    Model threshold
    $410
    Best in 90 days
    $448
    No fare cleared the alert bar in this window

  7. Miami

    United States

    Best Sept – Nov

    Check a price on this route
    Usually
    $332
    Model threshold
    $199
    Best in 90 days
    $226
    No fare cleared the alert bar in this window

  8. Reykjavík

    Iceland

    Best Nov – Feb

    Check a price on this route
    Usually
    $746
    Model threshold
    $447
    Best in 90 days
    $511
    No fare cleared the alert bar in this window

  9. Cancún

    Mexico

    Best Sept – Nov

    Check a price on this route
    Usually
    $682
    Model threshold
    $409
    Best in 90 days
    $477
    No fare cleared the alert bar in this window

  10. Lima

    Peru

    Best Sept – Nov

    Check a price on this route
    Usually
    $723
    Model threshold
    $434
    Best in 90 days
    $515
    No fare cleared the alert bar in this window

  11. Lisbon

    Portugal

    Best Sept – Nov

    Check a price on this route
    Usually
    $823
    Model threshold
    $494
    Best in 90 days
    $599
    No fare cleared the alert bar in this window

  12. Dublin

    Ireland

    Best Jan – Mar

    Check a price on this route
    Usually
    $658
    Model threshold
    $395
    Best in 90 days
    $479
    No fare cleared the alert bar in this window

Read the chart: the dashed grey line is the route’s median, the dashed indigo line is our alert bar, and every dot is a day the fare spent under it. A route with no dots is a route that has not been worth watching — we would rather show you that than hide it. How the bar is set

Other airports modelled in the United States

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