Domestic Flight Availability and Distance

Domestic Flight Availability and Distance

Domestic Revenue Aircraft Departures and Average Domestic Flight Stage Length (monthly data, not seasonally adjusted)

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Date Revenue aircraft departures (thousands) Flight stage length (miles)
Jan-79 387 505
Feb-79 402 502
Mar-79 405 508
Apr-79 361 482
May-79 366 480
Jun-79 411 509
Jul-79 427 512
Aug-79 436 533
Sep-79 402 515
Oct-79 417 501
Nov-79 420 493
Dec-79 425 501
Jan-80 422 504
Feb-80 421 504
Mar-80 422 506
Apr-80 431 493
May-80 413 502
Jun-80 427 510
Jul-80 440 502
Aug-80 440 502
Sep-80 419 491
Oct-80 411 495
Nov-80 397 494
Dec-80 403 497
Jan-81 418 496
Feb-81 416 494
Mar-81 427 489
Apr-81 432 488
May-81 428 478
Jun-81 451 486
Jul-81 457 492
Aug-81 375 504
Sep-81 379 502
Oct-81 384 505
Nov-81 379 508
Dec-81 387 515
Jan-82 376 526
Feb-82 391 520
Mar-82 397 519
Apr-82 395 513
May-82 388 517
Jun-82 404 514
Jul-82 407 521
Aug-82 408 524
Sep-82 385 528
Oct-82 380 530
Nov-82 373 529
Dec-82 375 537
Jan-83 380 533
Feb-83 378 530
Mar-83 390 530
Apr-83 388 532
May-83 392 528
Jun-83 409 529
Jul-83 411 537
Aug-83 417 532
Sep-83 403 531
Oct-83 396 532
Nov-83 389 534
Dec-83 395 546
Jan-84 401 547
Feb-84 407 550
Mar-84 422 552
Apr-84 426 549
May-84 426 547
Jun-84 440 555
Jul-84 438 564
Aug-84 444 563
Sep-84 429 558
Oct-84 444 544
Nov-84 436 542
Dec-84 434 551
Jan-85 445 543
Feb-85 445 545
Mar-85 448 546
Apr-85 466 537
May-85 450 533
Jun-85 444 535
Jul-85 477 550
Aug-85 484 550
Sep-85 466 550
Oct-85 482 546
Nov-85 467 551
Dec-85 472 559
Jan-86 492 553
Feb-86 482 557
Mar-86 496 554
Apr-86 507 551
May-86 510 549
Jun-86 526 557
Jul-86 531 559
Aug-86 529 564
Sep-86 513 559
Oct-86 511 561
Nov-86 498 566
Dec-86 510 575
Jan-87 492 590
Feb-87 519 581
Mar-87 527 579
Apr-87 530 582
May-87 522 579
Jun-87 537 582
Jul-87 534 591
Aug-87 531 590
Sep-87 520 592
Oct-87 519 594
Nov-87 495 600
Dec-87 509 611
Jan-88 502 598
Feb-88 516 598
Mar-88 525 601
Apr-88 531 590
May-88 520 590
Jun-88 536 593
Jul-88 529 595
Aug-88 539 594
Sep-88 525 591
Oct-88 528 594
Nov-88 521 592
Dec-88 526 606
Jan-89 523 602
Feb-89 519 611
Mar-89 509 606
Apr-89 510 604
May-89 510 598
Jun-89 518 607
Jul-89 517 611
Aug-89 534 609
Sep-89 519 606
Oct-89 524 605
Nov-89 519 608
Dec-89 511 620
Jan-90 525 606
Feb-90 526 611
Mar-90 537 614
Apr-90 539 612
May-90 541 607
Jun-90 548 615
Jul-90 550 616
Aug-90 558 616
Sep-90 541 612
Oct-90 550 608
Nov-90 535 610
Dec-90 522 618
Jan-91 520 607
Feb-91 509 612
Mar-91 515 617
Apr-91 531 605
May-91 525 608
Jun-91 537 611
Jul-91 540 613
Aug-91 544 616
Sep-91 527 612
Oct-91 541 602
Nov-91 522 600
Dec-91 526 605
Jan-92 524 605
Feb-92 527 607
Mar-92 527 609
Apr-92 554 595
May-92 545 594
Jun-92 565 601
Jul-92 567 610
Aug-92 567 614
Sep-92 556 612
Oct-92 548 611
Nov-92 534 614
Dec-92 543 624
Jan-93 543 614
Feb-93 549 616
Mar-93 547 619
Apr-93 561 617
May-93 557 610
Jun-93 574 612
Jul-93 577 619
Aug-93 584 618
Sep-93 568 613
Oct-93 567 612
Nov-93 557 613
Dec-93 568 627
Jan-94 544 620
Feb-94 559 619
Mar-94 583 618
Apr-94 582 617
May-94 579 616
Jun-94 593 627
Jul-94 594 629
Aug-94 607 626
Sep-94 597 621
Oct-94 598 621
Nov-94 593 627
Dec-94 593 644
Jan-95 596 622
Feb-95 608 622
Mar-95 617 626
Apr-95 610 624
May-95 605 619
Jun-95 622 626
Jul-95 650 605
Aug-95 665 605
Sep-95 643 605
Oct-95 648 601
Nov-95 635 607
Dec-95 628 624
Jan-96 613 617
Feb-96 640 616
Mar-96 648 621
Apr-96 646 621
May-96 642 621
Jun-96 647 635
Jul-96 644 631
Aug-96 652 634
Sep-96 635 627
Oct-96 644 625
Nov-96 625 631
Dec-96 628 641
Jan-97 626 636
Feb-97 643 635
Mar-97 645 639
Apr-97 648 637
May-97 644 634
Jun-97 655 640
Jul-97 635 674
Aug-97 645 653
Sep-97 631 652
Oct-97 629 656
Nov-97 613 656
Dec-97 617 667
Jan-98 598 664
Feb-98 630 652
Mar-98 634 654
Apr-98 660 640
May-98 635 648
Jun-98 650 652
Jul-98 664 651
Aug-98 658 652
Sep-98 621 655
Oct-98 657 656
Nov-98 645 676
Dec-98 648 667
Jan-99 619 664
Feb-99 656 652
Mar-99 668 658
Apr-99 671 659
May-99 660 660
Jun-99 681 667
Jul-99 680 670
Aug-99 690 671
Sep-99 668 672
Oct-99 680 669
Nov-99 672 665
Dec-99 675 676
Jan-00 648 670
Feb-00 673 674
Mar-00 695 675
Apr-00 683 678
May-00 699 667
Jun-00 712 673
Jul-00 709 678
Aug-00 726 678
Sep-00 709 673
Oct-00 719 674
Nov-00 708 677
Dec-00 676 690
Jan-01 705 673
Feb-01 709 677
Mar-01 715 677
Apr-01 703 690
May-01 704 682
Jun-01 709 696
Jul-01 722 686
Aug-01 741 684
Sep-01 567 675
Oct-01 620 667
Nov-01 614 670
Dec-01 609 679
Jan-02 613 674
Feb-02 632 677
Mar-02 638 697
Apr-02 648 697
May-02 646 696
Jun-02 661 711
Jul-02 668 711
Aug-02 675 697
Sep-02 635 691
Oct-02 646 684
Nov-02 617 687
Dec-02 623 697
Jan-03 555 681
Feb-03 593 708
Mar-03 630 712
Apr-03 599 700

Frequency of aircraft departures, the number of connections required for a single trip, and the match between available flights and travelers' desired origin and destination points are all important determinants of scheduling convenience. Because data on connections are currently not available in a suitable format, flight stage length is used here to supplement the information on departures.

Flight stage length is the distance between take-off airport and landing airport. If the mix of origin and destination points are held constant, then an increase in flight stage length implies fewer connections are required for a trip and, therefore, higher quality of air passenger services.

The key relation is that departures and flight stage length will tend to move in opposite directions when changes are due to changes in the number of connections. For example, a trip from city A to city B with a connection in city C will have two departures, but generally a shorter average flight stage length, than the direct flight from A to B with a single departure.

Domestic Flight Availability Apr-02 Apr-03
Revenue aircraft departures (thousands) 648 599
Percent change from same month previous year -7.82 -7.56
Flight stage length (miles) 697 700
Percent change from same month previous year 1.01 0.43

NOTES: The current value is compared to the value from the same period in the previous year to account for seasonality.

The data have been adjusted to have a standard 30-day month by multiplying the data for each month by the ratio: 30/(actual days in month).

The data include both transborder and foreign flights by large U.S. carriers, but not include any flights by foreign carriers.

The dramatic changes in the September 2001 data reflect the impact of the terrorist attacks on Sept.11, 2001, on aviation, including several days in which commercial air operations were suspended.

The data reported here excludes small-certificated and commuter carriers that began reporting T100 data in 2002 for comparability with previous issues.

Refer to the Special Notes at: http://www.bts.gov/oai/ for specific concerns regarding the preliminary nature of the most recent data for latest issue of Air Carrier Traffic Statistics Monthly.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Air Carrier Traffic Statistics Monthly, April 2003.